Re: A Superhuman Registration World
The OP didn't specify why there was a superdraft, and the reasons he alluded to sounded kind of vague (and therefore weak). Given a superterrorist attack, I'm sure there would be supers crawling out of the woodwork to lend a hand, but I also suggest that it would have to be a seriously dire threat for more than a small percentage (I'd guess about 10%) to give up a job they are skilled at for a job where they might be expected to deal violence to others on a regular basis. I don't know about you, but I would get very, very stressed out (possibly to the point of what used to be called a "nervous breakdown") having to frequently face hostile people with intent to harm myself or others, and equipped with the ability to do so.
The only options in the OP for superpowered individuals are military service or as part of a superteam with law enforcement responsibilities. I'm pretty sure draftee Superguy's talents would not be squandered by assigning him to the motorpool as a wrench-turner. Likewise Superwimp, though not well-suited to law enforcement (he's a pacifist and abhors violence of any kind) is unlikely to be expected to handle only kitchen duties as part of Strikeforce Alpha.
Personally, I think it would be kind of neat to enlist in the National Forest Service and assist in fighting wildfires or searching for lost hikers, but that's just me. Basically, I'd rather not have to kill anyone if it can possibly be avoided. Likewise, beating someone up isn't my idea of a positive experience. People in the military have no choice in such matters so long as the order commanding them to do so is lawful.
Perhaps it's just me, but If my GM proposed a campaign along these lines, I would have concerns that it might be a darker campaign than I could have fun with.