dummy was pretty strange, hes made of gas and gets killed by a nice breeze. i think beak would have to be one of the weirdest looking characters ive seen in a while. i actually think hes pretty cool though. i think he will end up being fairly powerful. angel was worthy of being death and all he can do is fly. soon beak will probably develop that and some weird bird kind of powers. screeching maybe. skin is weird, but i always liked him too. sugarman is just a freak.
she (stacy) basically was a character that went around trying to sex up the x-men. her powers let her see pheromonal releases, letting her sense arousal, but also control "pheromones" [more like chemical releases] in those she touched for a variety of effects. she could make them aroused, or turn off their arousal, make them horribly sick, make them lose control of their bowels and bladder, sedate them, etc. it really shouldn't have been described as pheromone control, but whatever...
and ugly john was a strange character, given that his three faces were his only power. most deformed characters have a strong first mutation that augments their body into some grotesque form. really, the only thing ugly john could do was have a very broadened range of vision, seeing much further to the sides than an average person...
angel has a warrior's spirit, says apocalypse, and is unwilling to give into death's callings [see morlock tunnels.] also, warren's always been stronger than the average person, and replacing his wings gave apocalypse a good template to increase his physical strength and usefulness tenfold. beak, on the other hand, will likely remain a weak and wallowing character, because that's his appeal. hell, that's even how he saved the crystal palace. i dont think he'll ever get any superhuman upgrades, because he's hardly a character that's taken very seriously.