Getting sick of Sackboy? Throw him around in PAIN soon

Even before PAIN first came out there were mentions of bringing other Sony characters into the game, but we didn't expect the first one to be poor naive Sackboy. If Game Informer (via 1UP) is to believed, however, we'll be flinging him out of a giant slingshot "at some point in the future." That's pretty much all the info that's available on the subject. Could this be the first downloadable character for PAIN that's worth the money? Or would you rather Sackboy was a little more choosey about the games he visits? We've been conditioned to think that he's no bigger than a plush toy, so seeing him all human-sized is going to be a little weird.