The only other real option based on that color scheme that comes to my mind is Guardian, who would make sense in a Cadmus building (sorry if that's wrong; stinted knowledge of the character due to only knowing him from Young Justice). The problem there is he has a cape in that picture, and Guardian doesn't wear one.
But it looks like he's on display...
Odd. If Dr Fate's playable, I have no complaints, but man, our "likely" rosters are getting screwed up pretty bad lately. If the roster isn't above 24, who's out? Raven? Shazam? Man, the only reason I hope it isn't Shazam is so I won't have to apologize to people I called stupid for saying he wouldn't be in.
...but thinking about that, I suddenly remembered Captain Marvel Jr. I doubt it, mostly because the head is clearly yellow, but hey, it could happen. xD
Just want to point out that the video, while referencing "fate" in the title, actually says "NO Fate but what we make", so this could mean that he is not playable and just a statue/museum display someone made, or that there is currently no Fate, but the one that they will make in the future (i.e., he will be DLC)
Also, the design of the suit looks to be thoroughly the classic design, complete with gold undies, in a game that's redesigning every playable hero uniquely. (by "uniquely" I mean covering them all with armor from head to toe)