A notable omission: Lex Luthor. C'mon. You really think he's permanently dead this time?
Also, anyone who worked with Bureau 39. They took Trask out, but there are probably at least a few believers left in a dark corner somewhere.
Oh, and let's not forget the rest of Intergang and any leftover pieces of Lexcorp.
In any case... I think there's something even more important here that people seem to be missing...
CC is back!! 
