I get excited for Wrestlemania, with or with out a good build, just because I have been a fan for so long. I do agree, this year lacked build though for the matches. Some of it was beyond the company's control though, with Punk walking out, I am sure that changed things up. With the time they had, I thought they did a great job building for Cena VS Wyatt. I think they protected both characters well, so that both look strong going into the match. The main event is lack luster, jus because you don't know what it will be. Common sense says it will be Batista/Orton/Bryan. However, WWE loves swerves, so they could end up having it be HHH, and someone like Vince or Shane coming out and introducing Bryan, b/c maybe he got screwed over in his match or something.
The one thing going on for this years Mania is the mystique. Will CM Punk be there? Will Sting show up? Will Daniel Bryan walk out champion? What legends will be there? What will Stone Cold's role be? There are just so much possibilities for surprises.