I'd prefer Brock and there are plenty of more classic characters (Iceman, Polaris, Silver Surfer, Blade, and Nova to name a few) that have yet to see a spot in this game.
That being said, I'm happy for fans of the characters.
On a side note, I'm absolutely loving the Hank Pym and Wasp refactors. AoE Neutralized? Good-bye War Frenzy!