If Mbappe is healthy enough to sprint 20x and PSG can get by RBL, PSG poses a real fun matchup against Bayern. I'd keep Mbappe on Kimmich's side and play long balls all day. Have Ney sit behind Icardi and play a free role and try to come up with a defensive system for Bayern.
Lyon are obviously a good and well managed side, but unless they can punish Bayern's high line they will struggle like everyone else (but none of the other semifinalists will struggle as hard as Barca). PSG will absolutely have their hands full with RBL and they're a complete team. Shame they don't have Werner for this UCL run. They drew Bayern in both Bundesliga fixtures this year and the second was in early February before the shut down.