As much as I might agree with some of the bad directions on this list (Ric Grayson), I think I'm going to have to draw the line at including "poorly considered character arcs," 'cause a) how are we going to make a team book out of those, and b) we'll be here all day
Aside from those:
Brown Bomber
Ye gods. A character that (justifiably) never saw the light of day, the horribly racist proto-Black Lightning that never actually existed in the DCU, but only showed up once in a "time is all messed up" JLA story? Sure, I'm game. It'd be a challenge and a half to rehabilitate that misfire.
Fate
Already on the board.
AJ Curry
That poor bastich.
"We're gonna make a NEW Aquaman, and give him a heroic quest, and connect him to the Arthurian saga."
"Well, I didn't ask for that, but I guess -"
"And his name is ALSO Arthur Curry!"
"Ah, so this is a reboot, then."
"No, the old-school Aquaman is is still lurking in the background."
"So why is his name Arthur-"
"Also, the old Aquaman is a sea monster now."
"Yeah, I already hate this."
In short, I think he's one for the list.
Sparkle Twilight Lobo
Since a) it's been established that he's a separate character from "classic" Lobo, and b) EVERYONE hated that guy, I'll allow it.