I'd take a crack at Ironman but I don't much care for him now that he's the uber hero. 

As far as the actual roster of the Avengers I say to go completely out of left field. For it to [i]look[/i] like the Avengers, you just need two or three founders or their representatives on the team. Capt. Falcon and Thor already fill those spots, so let's see what happens. With the piss poor team rosters the All New All Different Marvel is throwing around we're bound to do better than 75% of their comics...

~KL~