Booker is a horrid wrestler now. If you haven't won the TNA title 2 years after going there, and you're a big WWE name, you really do know you're bad. He has not put on a single good match in his two years imo, and I fail to see how this would benefit WWE.
In 06, they had an almost there Cena, an almost there Orton, no Jericho, Kurt Angle, Mark Henry (??), Batista, Undertaker and probably a couple of others highlighting their shows (Rey, HHH, Shawn). The only things that have changed there is Henry and Angle have left, and Jericho's now there. When your ME scene contains:
RAW:
Orton
Cena
Triple H
Shawn Michaels
Legacy
Big Show
Smackdown:
Jericho
Batista
CM Punk
Edge
Morrison (well, soon I guess)
Matt Hardy
Great Khali
Rey Mysterio
Undertaker
ECW:
Christian
William Regal
Vladmir Kozlov
Shelton Benjamin
Tommy Dreamer
Hurricane Helms
Zack Ryder
(Features guys that could be main eventing soon)
Where does Booker T fit into that? Send him to ECW, and if that refusal to put younger guys over is correct, then no. RAW has a solid main event scene, with guys like M.V.P, Miz & Kofi ready to make a break, and Smackdown has the same.
No need for you Booker.