The Rock returning to face someone of importance could be a draw. I've always wanted to see Rock/Shawn, but Rock's never faced Flair in a one on one match. Maybe Flair finally takes out Foley, which brings back Rocky to save his best pal?
WM23 will be the most important show since WMXX so WWE really has to pull out all the stops to truly make this one a spectacle.
Not to nitpick, but Rock faced and beat Flair on Raw in 2002.
Sorry.