I agree that Strange 2 has got WAY too many characters in it (going by speculation and leaks here). I REALLY don't want mutants showing up in the MoM. It would feel so pointless to me. I think the Phase 4 stuff hasn't done a great job of balancing the characters in their shows and movies. People have complained that Sam and Bucky were overshadowed by John Walker and Baron Zemo, Loki was overshadowed by Sylvie and that Natasha was overshadowed by Yelena. I do think Wanda got the screen time she needed in WandaVision though.