You have no idea if this would be true or not.
What it will do is see more base hits as the defense won’t be able to overload the pull side of the diamond. Gallo won’t go the other way, but at least he’ll be on base more often. More base runners = more action = more fun to watch.
Football has an offensive and defensive team.
Why not baseball? If you (general “you”) think the DH is a good idea then there is no reason to stop with the pitcher. Make a team of hitters and a team of fielders.
Personally, I think the charm of baseball is its slower pace. Will the sport be better if we make it “more exciting?”
The owners were likely a bigger proponent of the universal DH, as it protects their incredibly expensive investments from suffering an injury during a fruitless aspect of their job.
As for adding another roster slot, that’s nonsense - adding another roster slot adds another roster slot. Adding the DH does not add another roster slot.
I have some sympathy for this stance in theory, but it’s really impossible in baseball.
Pitchers, in baseball, have, by rule, a distinctive position - they are the only ones who can start play, and they allowed to do so in a way that the difference between how pitchers pitch vastly outweighs anything else they can do with bat or glove. The defensive contribution of a pitcher in terms of turning plate appearances into outs probably exceeds that of the entire rest of the team; and is probably five times more than that of a catcher or shortstop.
Given this, pitchers are going to be selected for pitching ability alone, and anything else they give you is a nice-to-have bonus, but nowhere near vital. If you’re a pitcher, and hit like a civilian but pitch like Roger Clemens, you can have a roster spot on a big league team; if you hit like Albert Pujols but pitch like, say, Roberto Hernandez, you’re going to be shifted to a batting position while your team figures out how to do better than an 80 ERA+ in that rotation spot, and you might be called on to finish a blowout once or twice a season.
So pitchers will be, by and large, lousy with the bat, to the point that it becomes painful to watch and is a drag on offense. The solution is to not force pitchers to bat.
But you are now tossing part of the game which has been integral to baseball since forever.
You want to remove the strategy and make it merely a slugfest of who has better players.
Spitballs were integral to baseball since forever until 1920.
The mound’s height was integral to baseball since forever until 1968.
And frankly, I don’t see a whole lot of strategy involved in deciding when to pinch hit or do a double switch.
Integral to half the league you mean.
“Integral” is doing a whole lot of work in WAM’s argument.
There’s no strategy involved in pinch hitting for the pitcher in a game where starters aren’t going more than 6 innings anyway. Find something more interesting in the game to pay attention to.
You are advocating for a different game.
Which is fine. If you do not like baseball and would rather watch a game with an offensive and defensive lineup playing something that looks like baseball then ok.
But it is not baseball and do not pretend it is.
I’ve played variants of chess which are, arguably, more fun to watch. But they are not chess and no one pretends otherwise.
More nonsense. If you want to insist on being a purist, start advocating they only use the same ball all game, that you can get an out after catching the ball on the bounce, and that batters can request where the pitch comes in. Changes have always been a part of the game. Universal DH is an improvement to it, makes it more watchable, and is here to stay.
As I understand it, they already do. The DH rule doesn’t say that the DH replaces the pitcher; it says that the DH replaces another player. You could choose to replace whomever you wanted with the DH. It’s just that absolutely everyone chooses to replace the pitcher.
Tweaks to any game are fine and to be expected.
But nine players playing both sides of the game is fundamental. As mentioned up-thread there is a game within the game in baseball as the manager decides who to take out and put in. Now, that aspect is gone.
May as well just have a team of good batters and a team of good fielders. That would be more watchable, right? 
It absolutely does add another roster slot, baseball is going to a 26 man roster. 25+1 is adding another roster slot.
The universal DH is just another moment of America dumbing down for the lowest common denominator. It’s replaced strategy and subtlety for more dingers.
I’m at the age where you realize the world will take things that you love away; baseball, the planet and American democracy, to name a few. It’s just a drag.
No, the DH rule specifically applies only to the pitcher.
I did not know this. That makes me dislike the rule even more.
So with interleague play and a universal DH rule, why even have two separate leagues anymore?
Apparently, in some leagues other than MLB which use the designated hitter, this is true. But, in MLB, the DH specifically bats for the pitcher.
This is actually a good point.
The medium term plan is to have every team play every other team at least once. I HATE this plan. Hate it. Baseball by its nature must be arranged in mini-series, so unlike the NBA, you cannot schedule one game here and one there. The advantage of limiting games to intraleague opponents was that the schedules were reasonably balanced.
The advantage of having two leagues is that you have to divide MLB somehow for playoff purposes, but if you’re doing that, interleague play doesn’t really contribute properly to determining playoff spots. It would make more sense to eliminate interleague play now, which I know would require two more teams (I’d love that) or realignment (whatever.)
My next move as king of baseball would be expansion. If you need a 12 team playoff, eliminate the
Central Divisions and have two 8-team divisions in each league. The two division champions get the bye - making winning the East or West a big deal - and then you assign four wild cards, which are just the four best records of the remaining teams. With no interleague play, a 16-team league allows for games to be arranged like this:
Intradivision: 14 games per opponent, 98 total
Extradivision: 8 games per opponent, 64 total
That’s 162. Another option would be 12 against divisional opponents and 9 against the other division for 156 games, if you don’t mind carving 6 games off to make fitting a fourth playoff round in easier.
Another options with a 32-team, MLB would of course be four divisions. This makes the 12-team playoff format a little shittier, though, and having four divisions actually means it’s likelier for bad teams to make the playoffs. In my two division plan you are guaranteed that of the 6 playoff teams, you’re going to get 5 of the 6 best records in the league, and in most years you’ll get all 6. In a four division system it’s very possible for four shit teams to be in the same division. If you wanted to do that, though, the numbers above hold for the 156-game plan, and a split of 14 and 10 games will give you 162.
In my ideal world, you would have a 36-team MLB and a 16-team playoff. However, a full four round series requires March starts and late Octobers if you stick with 162 games (which works with 18 teams per league with a highly unbalanced 18 intradivision and 6 interdivision games.) I’m fine with that, but for fuck’s sake, schedulers, maybe emphasize southern locations and stadiums with roofs in the first couple of weeks?
The two leagues formally operated as separate business entities until 1999, when they both merged into MLB; prior to that, they had separate league presidents, had separate umpiring crews, etc. So, after 1999, the only real difference between the leagues was the DH.
At this point, the distinction between the NL and the AL is more akin to the distinction between the NFC and the AFC in pro football.
I like what college softball does. Their designated player rule is really flexible (to the point I don’t truly understand it), but you see some pitchers bat (they might be the best all around athlete on the team, or the starting pitcher might be a home run hitter). In the first instance, the DP will be the normal batter for someone else (often the catcher, but I think I’ve seen it elsewhere on the diamond). In the second, once the pitcher safely reaches base, a speedy player comes in to finish off the trip around the bases, and the pitcher will be back on the field.