Okay, I've developed my ideas. Yes, ideas. I lost my first post, but here goes again:
1) Facade - She wakes up as if from a deep slumber, and is slowly overtaken by a creeping horror as she realizes she has no idea who or where she is. Stumbling outside, she sees a woman...and when she grabs her arm, she changes into her. Now she finds she can find no concrete way to know who she was. Facade has the power to "sample" a person or substance by touching them. She can then become a precise duplicate of the person, right down to their DNA...or if it's a substance, she can 'become' that substance, taking on its characteristics. Only by following the clues in her possession when she awoke, and following strange dreamlike wisps of memory, can she hope to rediscover her identity. But is it something she will want to know when she's learned it?
2) Max Power - Max wants to be a cop. His dad's a security officer, and his grampa is a fireman. Running around in a uniform, responding to emergencies is in his blood, right? Well these days it's not ALL that's in his blood. Lately there's been a pressure building up inside him, like he was being slowly inflated with air. One day on the way to school that pressure reaches a critical mass...and he finds himself violently expelling a tremendous blast of some kind of energy! With some time he finds that this energy is constantly building inside him, and if he doesn't periodically find times to let off steam, it will erupt from him after reaching a certain stage, causing immense, uncontrollable damage!
3) Casper - Cassandra Soaring-Eagle is an oddity in this town; a Native American. Her folks are rumored to be retiring from the casino biz, and for some reason have left the reservation. They keep to themselves though, so no one really knows. By day Cassandra is a polite, quiet high school girl. By night she feels a strange power pulsing within her. She can move with inhuman grace and speed, perform superhuman feats of athletics. She struggles with the question of whom to serve with these nocturnal powers. Her community...or herself.
4) Stormbairn - Rochelle McKendrick is a 'stormbairn,' a baby born under the eye of a big storm in the old Irish way. Though she's always been a free spirit, tempestuous and mercurial, now things are going even farther. Strange clouds gather, and lightning flashes, when she's angry. If she's happy, the skies are blue even as the TV claims there's a downpour. Mists trail after her like playful ghosts, and when she laughs gales howl along with her. Worse, her moods have become more and more extreme, and less controllable. Does she control the storm, or does the storm control her? Or worse, is there not even a difference anymore?
If any of these particularly strike your fancy to develop into a full concept, please let me know. Otherwise I'll pick one and have a sheet for you asap.