Offline games, perhaps. I can't think of another successful mmo that forces questing in this manner. When an expansion hits, if you are at level cap, you step into the new expansion.
I understand that a sizable portion of this particular playerbase is perfectly ok with gating others out of content (for whatever reason), but that doesn't mean that we shouldn't have a discussion on the subject. Square made their bed when they decided to make crafting such a big deal in this game. It's only natural to expect those crafters to now feel bait-and-switched.