I agree with you about the game needing some serious fixes and more content. I think everyone does. In my opinion, a vault space increase is absolutely the first most necessary step towards that. No one can play new content if there's nowhere to store all the new loot they find. In which case, the new content feels like a useless grind that ultimately ends up as a few hundred glimmer and some weapon parts. I say, fix the vault space, THEN add content.