Nope, sorry – I disagree. You’ve chosen a particularly egregious example. There’s really no overlap with the Battle of the Baxter Building saga. The Galactus Trilogy stands pretty nmuch on its own. A single, long, continued story all those issues of FF do not make. And the three-issue Galactus saha stands on its own.
I mean, there’s a reason it has been called “THe Galactus Trilogy” for all these years, and not “the Big Story Arc” or something.
It’s arguably what he’s doing with Doctor Strange at the same time. The month FF #48 hit the stands, Doc’s story opens by resolving the previous-issue cliffhanger (since the bomb planted in his townhouse is about to detonate, and Doc’s almost too exhausted from what’s come before to save his own neck). The previous twelve issues centered around Dormammu’s plot, empowering the minion-happy Mordo to hound our hero – and if one issue ends with Doc laying low in Hong Kong, that’s where the next one picks up; if another has Doc entering Dormammu’s realm to confront the guy who’s thus far been fighting him by proxy, you can bet the archaic by-the-rules duel begun in one book will continue in the next – and et cetera.
My biggest objection to claiming that al those issues of FF constitute a super-story arc is that any “bleed over” from a previous issue is confined only to those couple of pages. The Inhumans stuff that Fenris cites is creally an “extra”, in that the story ended in the previous issue, with a satisfying conclusion. The few pages with them are like the extra bit they throw in afdter or during the credits in a movie – it tells an extra bit of story. Not an insignificant one, but one that wasn’t needed to complete the story. And, more importantly, it doesn’;t interact with the rest of the FF story in that issue – it’s irrelevant to the rest of the issue, which goes blithely along without it. Thsat wouldn’t be the cse if you really had a continued story arc. I don’t think that having this kind of story “phase shift” between issues is really comparable to the way you really do need to have issues 48-50 to read the ciomplete Galactus story.
Stan Lee’s “experiment” seems to be just using a dramatic “hook” to get you to buy the next issue.
One of my favorites was the Brood saga back in the Claremont/Cockrum X-Men days. Great storyline, lots of cosmic stuff, start of the New Mutants.
And I still love Crisis of Infinite Earths. Even though it’s been rebooted three or four times now.
If by “a couple of pages” you mean 1/3d of the first book and 1/3d of the third book, maybe. 
And in the case of FF 48, the story from FF 47 has absolutely no resolution until FF 48 and after the climax of the fight with Maximus (that they lose)-- it’s not just a quick denouement, it’s the resolution to the story. After that, the FF don’t even notice that there’s anything amiss until they’re flying home, and in the plane Johnny’s moping about Crystal when they notice a second sun in the sky (caused by the Watcher)–about page 8 of 20. That’s seamless, IMO.
We may have to agree to disagree. Still awesome stuff though.
I read a comic occasionally as a kid, but this was the arc that made me a collector. In my freshman year of college (late '82), I went with a friend to the comic store while she picked up her copies of Elfquest and The New Teen Titans. I decided to grab some things from dime bin. One of these was the issue in which Wolverine is alone in the wilderness of Broodworld.
This was the issue in which Wolverine first used his iconic self-description: “I’m the best there is at what I do, but what I do isn’t very nice.”
I just had to see what happened before that and what happened next, so I bought a lot of back issues. Then the arc ended with the creation of the New Mutants, so I was a collector from then on.
But I stopped collecting around '90 or so. Ah, well.
I take it this is an online subscription? How much and would I be able to read all these old comics?
Well, until I read it I won’t really know but I see Dark Phoenix Saga ranks higher on Comic Book Resources Top 100 Storylines.