Christian can fit in freakin well on RAW-If he turns heel.
If anyone can do it, it's him. He's been a heel before, and a darn good one at that. He would give Raw a much needed heel as well as faces clog the main event scene. Heck, even at out cancelled ppv, Survivor Series, we had 3 faces against each other for the title.
As much as I love Christian as a face, his cockiness and attitude are suited for that of a heel. Remember when he was doing commentary on ECW right before the Rumble, and he brought a list of questins for the announcers to ask him because he said the last ones they asked him were stupid. That's a heelish type of move, or at least a tweener.
So here's where Christian comes in. We assume Cena wins the belt back at Wrestlemania, and defends it in a stipulation match against Batista at Extreme Rules(they got rid of Backlash.) I know it's been done before, but Christian wins money in the bank, and then procedes to freakin annihilate Cena with a con-chair-to.
He then cashes in his MITB priviledge by easily defeating a worn down Cena, and wins the world title. His explanation for his actions could be that he was sick and tired of being overlooked on that "third rate" show, and being left off of PPV's. He touched on that before when he had his ladder match with Shelton, just not as a heel He can say he did what he had to do, which was take the WWE title, ensuring he'll never be left off of a ppv again.
He then blame his peeps for being left off of ppv's. He can claim that if they were clamoring for him so much, and in his corner, they would have flooded WWE with calls and emails demanding he be put on EVERY PPV. Even if they did, it didn't happen, so he's got a window there too.
So you get mega-heat for Christian immediately. I know the guy is immensely popular, but so was Jericho, and to a slightly lesser extent, CM Punk. Both of those guys turned on a popular face, as well as the fans, and wound up hated.
Who better to do it against then arguably the company's no.1 face, John Cena? If something of this nature doesn't happen, he'll get lost in the shuffle like Kofi has right now. To me, you have to turn him heel in order to have him find a place on the roster.
Either that, or have him form a tag team with Kofi and have them take the tag titles from ShowMiz, but that would be a slight step down for both. If you want to keep him relevant and in the mix, preferably the main event picture, then turning him heel is the way to go.
All of this, of course, is dependent on him winning MITB, and also what direction they go with the draft. Having him on Raw could be a bait and switch, and he could be drafted to Smackdown. Or vice versa, you have Edge being drafted back to Raw. That would make for a compelling feud as well, and WWE has been throwing subtle hints since Backlash last year that it will happen. Now you have Edge as an Uber-face, and Christian can be the heel. I know this dynamic was done before, but it was in the mid-card, and furthermore, it clicked! Plus it was a long time ago, so alot of people weren't even watching wrestling back then.(Like the kiddies)
Either way they do it, Christian needs to be a heel for it to happen and him not languish in the midcard. And I do think he will turn heel, and will fit nicely on Raw. It's just a matter of against who.