From what we saw at Mania...which was alot more "newcomers" compete for titles and against veterans, I think that it would be a good idea to keep some around, or bring back a few for a while longer (such as Trish and Austin). This year's Mania showed me that people fully ready to see a new wave of wrestlers competing at the grandest stage of them all, such as ADR and Cody Rhodes. Not to say that their matches weren't great, or that they didn't deserve to be there, but compare their crowd reactions with those of Trish Stratus, Stone Cold Steve Austin and The Rock. They paled in comparison. I think keeping the veterans around for a while will help the younger crowd. But I doubt that the ones such as Mark Henry, or even Goldust at this point will do anything to further a rookie's career. WWE have fucked them up way too much for that opportunity now.