Orton was a bit of a surprise as well, for the reasons you state. *smirk* I think that's one other reason they brought Taker along. Backstage reports around the time of those handbag incidents tell that Taker 'despised' Orton. I'm sorry but that's one man I'd NEVER want pissed off at me...
Seriously; Mark worked a program to put Orton over at Vince's insistence but never forgave the cad for humiliating Stacy Keibler so badly that she refused to re-sign a continuation while Orton remained. Young Randy never understood that playing a heel doesn't give one a license to be one in real life. I suspect that it's just about to catch up with him, dispensed by a guy who's solid profit-making puts him beyond McMahon's reach.
Calloway's a class act but he rules the locker room because he does what must be done to maintain order among a wildly various group of athletic egotists vying for top spots. The Undertaker's recently undergone therapy for his mobility problems that allows him to incorporate Ultimate Fighting techniques into his repertoire.
If I were Orton I'd be shopping around to rival companies around now before being corralled into the shoot that's coming.