Well, the line has to be drawn somewhere, and I think a 10-game lead is a pretty good point where we can safely say “yeah, the team with the better record is getting jobbed if the system is allowing them to be eliminated from the playoffs in just one game”.
Good point about burning pitchers. If I had my way, I’d shorten the regular season and give more time after the wild card games for rest, but I don’t think that will be popular.
Or perhaps an unholy mashup of my proposal and asahi’s idea from this post might work - if a wild card team has a record that is ≥ 15 games better than the division winner with the worst record among all the division winners, then the teams swap spots - the division winner has to play in one wild card game, while the “wild card” team goes straight to the divisional series.