Thompson's a fine role player who can hit the occasional J and rebound like a maniac, and would be relegated to that role, if we get either Favors or Cousins for sure. In fact, the Cousins/Dalembert would be optimal because we're surrounding this offensive, rather earthbound PF with a shotblocking/rebounding center, and then we have a pure hustler in Thompson off the bench. Would make tons of sense for the team.
Back to Monroe, and in regard to the poster three posts above this one, I doubt Monroe has that sort of mental makeup--he's not really a banger, and he's a rather average rebounder in this league, frankly. His game is rather an enigma for the league--his defensive IQ is high, but would his lack of physical tools stymie that? He can pass the ball extremely well, but would his unreliable jumper and unrefined post game take that away? His strengths to be are rather untapped, and his weaknesses are in full force the minute he steps into the league. That's why I'm extremely skeptical, even though I think his basketball IQ can overcome some of that and make him a viable team defensive/low post-passing option. I can't really see him becoming more than that in the league based on his body of work in Georgetown, however.