Some of those 6* are amazing. Gotta be ranking the six
You have super good roster.Here are some options for 6 star R2:CapIwGully 2099Human TorchCorvus GlaiveDominoNamorStealth Suit spider manVenom the duckHavokThingHere are some options for 5 star R5:Doctor doomCapIwCorvus GlaiveDominoSorcerer SupremeCaptian MarvelArchangelStark SpidermanSunspot WarlockVoid (if awakakened)You should rank up Dr.Doom to Rank 5 as it needs a nullifer and a power controller