If Sinestro and Green Lantern have separate spots, then Aquaman and Ocean Master can easily be the same. Aquaman's moveset from what I can tell is not characteristic of Ocean Master at all. Ocean Master would use much more elemental, magical means of defeating his opponents rather than relying on the trident in its entirety.
Also, Hawkwoman has a semi-mainstream villain: Gentleman Ghost. An ages old spirit doomed to haunt the Earth after making a bargain with a demon. He would be an interesting character to see. I could see his gimmick being a powerup where instead of his usual white get up, it turns black and reveals his rotting body. I could see him with an eye laser, a phasing teleport, some magical attacks and plenty of cane work. He would definitely work as a sort of Johnny Cage figure (meaning at first, he would seem unimportant but at the end, he preforms some magical feat that helps end the game's plot.
I'm thinking our choices for a Flash villain can be narrowed down to a solid three: Captain Cold, Mirror Master and Gorilla Grodd. You can even knock out Captain Cold if we have Killer Frost in for sure and if you believe that gorilla in the Red Son DLC trailer is Grodd, then you've only got Mirror Master left. I still don't think that's Grodd because that stage appears to be on the outskirts of Gorilla City, annexed by the Regime. It seems odd that Gorilla City is a stage when no character currently known has any connection to it. We could even have two villains because it appears we could have Ares and Circe (at least, Ares.). Mirror Master does seem like a possibility or at least he does as long as he is alive in the comic. He also has a semi-designed look in the comic too. If you look closely, you can see an armor-like touch in his helmet design and military clothing as well.
