Kevin's not listed among the DA members. I don't envision him fighting so much as trying to support the forces from the back of the lines. Kevin and confrontation...not so much. He'd be more than happy to connect with Pomfrey and help tend to the wounded, only firing off spells when he has to. (He has, after all, no real combat training.)
Regarding a reboot: I'm game, but I think some of the details might be better sorted out in a mega Wished chat, rather than in threads here. I have a hard enough time keeping track of active threads that have fallen off the front page.