I’d love additional masteries (shield/paladin mastery WHEN) but I think Crate is pretty burned out from making them. After the first expansion I’d rather give them time to recharge their creativity, maybe release some smaller, free content here and there as they are apt to do.
As for a whole `nother plot of land to slay baddies in? I dunno. I’m going to want to see how absurdly massive this coming expac is, as Crate tends to overdo everything. I don’t think I would want a higher levelcap or another tier of loot, but I’d never be opposed to more quests/lore/enemies.
I guess the short version of my opinion is “Yes, in time.”