Yeah, true. Joe as the leader of Aces and Eights would simply kick ass. Besides, it's been a while since he's been relevant. I'd welcome it.
Secondly, Abyss in Aces and Eights? Nah. I can't see Park reverting back to being Abyss yet, his hair is like, too short. Imagine him with the Abyss mask. He's.. just not ready yet to go back to being who he truly is.