We are impatient. We've seen the top guys, we want new top guys, and we want them all now. But if they happen all at once, that's a dangerous situation. That's what happened to WWF in the early 1990s--all of a sudden Hogan, Savage, Luger, Steamboat and even Nash and Hall were gone, and Bret Hart and HBK were suddenly moved up. That almost killed WWF. At the end of 2000, Hogan, Nash, Hall, Flair, Goldberg and Sting were suddenly out of the WCW title picture and mostly off TV, leaving Jarrett, Booker T and Scott Steiner to try to carry the ball. Didn't work out too well.
You have to mix the new main eventers with the established stars so that they start being perceived as equal. Legacy the team is equal to DX for now, but no one would expect Rhodes or Dibiase to beat HHH or HBK in singles matches.
Call for more tournaments for No. 1 contender spots. Tournaments allow main eventers and upper mid carders to meet without having to write a whole story. "These names came out of the hat" and "I want the title and you're in my way" aren't hard points to get across. Assume that everyone from Raw retains, so you call a No. 1 contenders' tournament with HHH, HBK, ORton, Rhodes, Dibiase, Mark Henry, MVP and Kofi Kingston. With DX, Legacy, and MVP-Henry aligned, there's plenty of room for interference and cross-feuding. Give Kingston a win or two and let Miz and Swagger compete for either a solo US title shot or a shot at the open title. Jericho and Show will still be stirring the pot, so a Legacy-Red Dawn-Jerishow triple threat tag match could happen easily.