Depends on what we'll get as "endgame". Are we talking about challenging content like Ultimates and Savage and Extreme? Some people will ofc debate on if the latter is challenging.

Personally, I'm far from the target audience for several expansions. I'm more into the casual stuff like socializing with my FC, crafting/gathering, and doing roulettes for tomes these days.

But I know there is a player base that are requesting more, so if they can find a happy balance, go for it.