Swagger isn't considered a flop at all. It's no harm if you think it because as most people know you're a casual.
As for Kane becoming US Champion, he could be the one who perhaps takes it off Kingston. However I'd keep him away from titles, he's beyond them now. Kane is a figure no matter what status he's at, jobber or main eventer, who could put someone over greatly if he loses to them. Doesn't matter if he's lost previously, you beat Kane and you've given yourself a good rub.
So I'd use him for up and coming superstars.