Keep
Baron Zemo (W/O Moonstones) - He is too uber with the moonstones; plus, like last season, it proved a big pain in the butt defining him that way. I just remember going round and round debating how powerful he was/should be, and it was more of a headache than it was worth.
Bullseye
Fixer - Vast potential, and has gone pretty far, if I remember right, in both seasons.
Gravitron - This is debatable. I defeated him as Iron Man; but, that was by the skin of my teeth, because he could be interpreted as WAY TOO UBER.
Green Goblin (Norman Osborn)
Joystick - Pretty cool character, especially when it was revealed the extent of her powers.
Mach IV
Moonstone
Penance (Robbie Baldwin)
Radioactive Man
Songbird
Speed Demon
Venom (Mac Gargan)
Potential
Baron Zemo (W/O Moonstones) - He is too uber with the moonstones; plus, like last season, it proved a big pain in the butt defining him that way. I just remember going round and round debating how powerful he was/should be, and it was more of a headache than it was worth. As he is without, I think we have more interesting characters who could take his place.
Charcoal - Again, like above, we have more interesting characters.
Plant Man - Depending on location, he can be pretty powerful.
Drop
Atlas - We already have numerous size changers and nothing about him really sticks out for me.
Blizzard
Jolt
Swordsman - Not much to him, and he have waay cooler characters in the Potential category.