Ben

I just read the article in Game Informer and it answers alot of your questions so here we go. They're not directly adapting the champion number based system, you use the face buttons for special attacks and rotate in new attacks with one of the shoulders. They promise combat will be fast but not button mashing skill will be involved. You will get loot and you can toggle whether you see your character waring it or not. They're using an evolved version of the engine they were using on the marvel mmo which cryptic owns. You can also create your secret identity and your arch villain.