1: Rhino : He has zero immunities, hits like a pillow
Suggestion : just like colossus make him unblockable for 6secs whenever he use special attacks. Increase his attack also
2: Hulk : C'mon guys how can you forget hulk he is one of the strongest character but hits like a pillow..
Suggestion : Give him ability like star lord more hits = increase attack.
3 : venompool : he is unexistant in game.. no one uses him because of him less damge. Give him frenzy like buff just like moleman.
4 : Dormamu : he is the most powerful villain in mcu. Have some respect for him. Increase his damage and gives him regeneration when fighting energy based attackers because he feed on energy.
5 : Unstoppable Collosus : in this case i wanted to say please completely change his playstyle. Make him atleast a A- tier type champ.
I made this suggestion because i have read somewhere that kabam wanted to know which champs needed to buff in future so they doesn't left behind.
So these are my suggestions.