I think Kevin Nash and Triple H will both induct HBK into the Hall of Fame - meaning Nash may have a Bret Hart deal, were he may be used up until the Hall of Fame before Wrestlemania, then disappear.
As for Booker T, I see him sticking around for one last run - but perhaps not a long one.
I would also LOVE to see Kevin Nash on Raw, cutting a classic promo on CM Punk and his New Nexus about them being "nWo Copycats", maybe even teaming up with John Cena to put Kevin Nash back into the good graces of the fans, and let the younger fans know who Kevin is.
I don't see Kevin returning as Diesel though, but who knows??
Can't wait for the Royal Rumble, though!!!