Re: Superpowers that haven't been thought out...
This one is from a personal experience. I was creating NightShift, my teleporter/rifleman and I wanted him to do the "summon weapons out of thin air" bit. I came up with the rationale that he could infused part of his essence in objects and then attract them to him so the bits could rejoin, dragging the object along interdimensionaly. Essence rejoined, the object wants to snap back to its original place so he just has to drop it and *poof*, away it goes. Seemed pretty staight forward.
Set up a secret armory closet in his home, bought him his rubber-bullet machinegun to go in it, a bit of C4, a knife, a "pin clothing to wall" entangle for the knife - drat, the knife will just poof right back as soon as he throws it, won't it? Well, no biggy, that entangle was just a bit of garnish and - And that's when I colllapsed in a fit of giggles wen I realised what a gun does, actually : I'd just created a super who could shoot the heck out of his own broomcloset, indirectly and at tremendous range...
Um, back to the drawing board.