A couple of those might be easy and I don’t see why they shouldn’t. Whenever you get into adding things that weren’t there though without lots of planning is tricky. I don’t know if the time and planning would be of best economic interest given the majority of players play content with others and expect to be able to. Don’t get me wrong, I’m not against solo content, I’m just not going to pretend the game is meant to be it or that solo content should be developed as a primary means of garnering player attention.