I don't pretend to be an expert, and would defer to others, but her are my guesses just for fun:
No clue, but it's set up well for Milos. He may be more of a lead by example than vocal leader.
I would imagine that one or the other will be on the court during almost all meaningful minutes. My guess is that it's more Milos when both share the court.
Yes, that's the million dollar question. I've said before that we have enough redundancies in the lineup that we aren't dependent on any one incoming player to be a hit -- Hugley is that exception. If Uzan and Hugley are both healthy and play reasonably close to their potential, it's hard to see this team not being an NCAA tournament team. If Hugley struggles or gets injured, it's pretty easy to see this being Moser's last year with us.
Yaya being a quality player that is healthy would be an incredibly welcome suprise. That would do wonders for this team. If Hugley is playing well, though, it's easy to see Godwin eating up 10 quality minutes. He did that a decent amount last season. I'm not terribly optimistic about Norweather's contributions this season, but again, if Hugley can give us a quality 30 minutes, I'm not terribly worried about finding a guy to fill the last 10.
I'm not as worried about what we have behind Moore at the 4 if the 5 position is solid. They are all undersized, but between Soares, Oweh, Cooper, and Cole, we can find quality players for those minutes. It would be a huge concern if we had final 4 aspirations, but not so much for a team who is just shooting for a tournament appearance.
I haven't seen enough, but it sounds like it. Maybe not a great matchup, but good enough that teams wouldn't frequently seek that out. I'd be more worried about McCollum switching onto the other team's 4. Not as worried about switching with guys like Oweh, Soares, and Cooper.