Hmmm... I think FOUR (4) dice to roll for 4 dice abilities is too short.
I mean if you are going to have 4 dice abilities (requires 4 dice), you will probably need to have SIX (6) dice to roll and hopefully that improves your odds of getting one of the superhero's combos.
Four (4) for 4... is going to be rather difficult. Six (6) for 4 is more reasonable.
Just an observation.
I'm starting to like that dice idea FrankM, I'll see how i can incorporate it into my game
Edit: my post is getting long, already page 2, i just want to tell you guys how appreciative im am for all you guys idea and that you take the time to help me, even if i don't use all of your ideas i still appreciate it
Edit 2: ok an update, i made some dice mock ups, i might decide on adding a mechanic that i had in my previous game, which is bench champion, these act as back up and 2 active zones 1 melee and 1 range, any card can go in any 2 zone but some will benefit more than others such as makes sense having a champion that does solely range attacks and it should be placed on the range zone.
The bench champions are placed facedown until you reveal them by switching a bench champion to the battle zone or when opponent directly attacks the bench champions. Who knows i might scrap it if it doesn't work out but so far it is all i have.
I posted a new image on the op (champion 2 dice) which shows the dice faces and champions cards
Edit 3: I made a draft rules page, its not complete so its only the basic
http://i.imgur.com/5rKEgL4.png
Edit 4: I was able to creat the mechanics with stickers and dice, i did some test roles trying to get the desired result, some of the times i failed so im thinking to change the miss face with a reroll, so if you get the reroll face you can roll that die again. I am aslo using 4 dice per roll, so 4 action dice and 4 defend dice for the opponent. and only using 2 combo results on the champions cards, like fire punch will only need a punch and a star instead of having a result of 3 needed