Starting off, I'd draft The Miz over to Smackdown. Miz is a great talent and is a Main Eventer. I'd also bring over Dolph Ziggler, hopefully he's ready for a World Title Shot because that's where he's heading. The final choice I'd bring in is Rey Mysterio. He can feud with Cara for a while before retiring. I'd move Orton, Big Show and Barrett, I think that at least 2 of them could be a big player on Raw.
I'd focus the brand all on wrestling. You have Bryan, Ziggler, Rhodes,Christian Miz, Mysterio, Sheamus. All solid Main Event workers. Smackdown would be the opposite of Raw.
I'd try and make the Tag Matches and Diva's matches feel important. I'd create a few make-shift teams and give them a chance.
I'd keep have Orton win at Mania and win at Extreme Rules against Bryan. On a Smackdown, Ziggler would win the Title from a moving Orton. Ziggler would then feud with a face Bryan.
The IC Championship, I'd have Rhodes retain it till March. Then I'd have him drop it to the returning Sin Cara at Mania, in a short match, similar to when Rey won the Title at Mania 25.
As far as feuds, I'd have Miz feud with Sheamus where the blow off would be that the winner would get a Title Shot.
Like I mentioned before, I'd have Cara and Rey feud over the IC Championship, putting Cara and the Title over.
Bryan vs Ziggler for the Title. Bryan wants to regain his Championship and they can put on amazing matches.
Epico and Primo vs The Uso's, this writes itself imo.
I'd have a few midcard feuds with Alex Riley vs Tyson Kidd and I'd put Drew in a storyline.