It's not so much content that I'm worried about, there's already quite a lot of content in Act 1, I'm more concerned about the max party level being 10.
Somewhere here there is a thread discussing that. Apparently the 5e progression levels off after the early ones and it takes more XP to ding the next level. It's not a linear progression where you can extrapolate from the hours spent to get to level 4 in the game. So it shouldn't be a problem for Larian to create a very large game where we "only" reach level 10 or thereabouts.
