Just joined the Hulk club. Couple of mods were already installed including the Captain America pop bumper caps and the tesseract. And I just added the clear Loki plastics, green superbands, and led speaker kit.
So far I'm really enjoying the game play (after some tweaking of course), seems highly underrated to me. Tweaks have been, raising Hulks arms, limiting his side to side movement (which broke the plastic beside him), and shielding the green display from the florescent tube which really washed it out.