EDITED: from my earlier post sorry for the long post..
Superman: His trait is too much like Bane's he should ONLY have the ability to break armor, and NOT a damage boost. It should also have a charge factor. Perhaps it gives him ONE hit of armor on Specials while active eg. The Man of Steel.
Bane: I feel he is fine as is, perhaps grant him a "Parry Break" ability to be attached to specials while Venom is up.
Cyborg: He should be immune to ranged attacks while using his trait, not melee attacks, and the Health Recovery speed should be a bit faster. Give it a longer cool down.
Black Adam: His trait is fine as is.
Harley Quinn: Her trait needs faster start up to be more effective so the random factor won't actually be a hindrance in game play.
Aquaman: His trait need a longer cool down.
Doomsday: I feel his trait needs to be able to adsorb a set amount of hits (
say about 4 or 5) not have a 7sec duration.
Lex: Add projectile deflection to his trait making projectiles bounce back in the direction they came from would make it more useful, along with the absorbing 2 hits.
Batman: Longer cool down on Robo-Bats.
Lobo: To much needs to be fixed on this character, but his trait needs a larger damage buff IMO.
Killer Frost: Her Trait is fine.
Sinestro: His Trait is fine.
Catwoman: Her trait is fine.
Hawkgirl: Perhaps increase the movement speed while she is flying.
Joker: Give his trait the ability to parry while being hit like Aquaman's trait but give it a limited use, to where it can only be used only 3 times a match until his x3Ha meter is filled. Make the "Ha"s permanent buffs to his movement speed. Increase the damage of the Parry to 11%.
Green Arrow: His Trait is fine as per Chris G.
Green lantern: His trait is fine. His Ring Grab move should be able to be ducked.
Wounder Woman: Her Trait is fine.
Solomon Grundy: His trait needs allot of re-tweeking. The Health buff throw currently dose NOTHING, make it heal Grundy 6% or something. The Defensive throw buff should give a Flat 2% damage shield vs. all attacks. Damage Throw is fine as is. Add in that each health gain must be reset with a different throw, after the initial one (
Example: Heath Throw then Damage Throw into another Heath throw would yield 12% health, but x2 Heath throws in a row would only be 6%). Drop the damage from the Health Throw by -2%.
Ares: His Trait is fine. Perhaps increase start-up on some of his normals so he can't do the 100% reset.
Raven: Her Trait is fine, but perhaps her DF1 Projectile should track the target while in Demon form.
Death Stroke: His trait needs a bit faster start up but his gun moves need a slower start up, to allow rush-down a bit more of a chance to get in.
Flash: His Trait is fine.