I don't mind Fortress Lad too much, but I hae Koko and I hate Cub too. Lori Morning was just really annoying, but I don't hate her THAT much. I wouldn't mind if she was brought back, as long as she'd be aged to around 16 or so.
Koko, on the other hand, I'd like to stuff into a blender.
Preboot Atmos and Kid Quantum (James) should be swallowed up by the Super Moby Dick and digested. Slowly and excruciatingly.
I never actually read the issue in which Jamm appeared in, but just from what I've heard about him I already hate him more than my annoying little cousin, and that's saying a lot. I'd love to toss him into a black hole and forget he ever existed.
That other Khund Legionnaire Firefist just bugged the hell out of me. And while Starfinger II made a pretty good villain for the Legion, that bloody arrogant how-dare-you-attack-me-I'm-so-much-better-than-you attitude so made me want to blast his head off with a bazooka.