Kinda hoping Darkseid would be the story boss, like he takes advantage of the situation somehow during the games events. Him as a stage transition reminded me of Kahn's appearances in MK stages. As a playable character yeah it would be hard/weird with him also a transition but a boss, yea I could see it. (likely not gonna happen tho)
Darkseid an Brainiac are two heavy DC hitters that are missing so I was hoping for Darkseid as the final story boss/dlc storyline extension boss and Brainiac a dlc char.
MMH, Lobo, Black Mantra, Black Carnary, Poison Ivy and Brainiac are the dlc characters I'd like to see put in as stand alones. Powergirl, Supergirl an others with similar powers as cast id like to see as alternate skins with new voices/out-intros.