With Brock out of the picture in the foreseeable future, the UFC is down their #1 PPV draw. With Cain also sidelined until later this year the UFC's heavyweight division is experiencing some substantial setbacks. They still do have a few rising stars to build but let's be honest:
Junior Dos Santos - Doesn't speak the best english, he doesn't have a huge personality or star aspect. Hard to build up a guy whose always smiling.
Cain Velasquez - Awesome fighter, but also a quiet guy. He put the beating of a lifetime on Brock. It surprises me a little he isn't more famous than he is, but I guess he's just missing something which is why he isn't a star yet.
Shane Carwin - also known as Shane "Cardboard Cut-out" Carwin. He's got the heaviest hands but speech patterns that could put an insomniac to sleep. I believe he is going to adopt Brock's entrance theme of "Enter Sandman" because it suits him a little better outside the octagon.
However I feel like in the UFC you either start with hype and live upto it or fizzle out, that may not be true, but I feel like the safest bet to creating a new mega-star is a guy with a superhero physique and highlight reels of knock outs, also known as ALISTAIR OVEREEM.
I'm no Roy Nelson when it comes to predictions, but I suspect that we will be seeing Alistair in the UFC a lot sooner than they originally speculated at the time of the acquisition. I suspect once he washes the floor with Werdum, the "Grand Prix" which clearly isn't going to continue will effectively be cancelled and Alistair will come in and challenge JDS, Carwin or Cain (depending on injury, availability and title implications)
Then once he trounces them the world will love his trapezius like I have learned to and all talk of Fedor will be forgotten.