I really hope that Taker is skipping this year and just waiting for XXX to retire after a match with Cena at Mania. Outside of just being the best thing for his health, there's also the fact that outside of Cena, there is literally nobody else I want to see the Undertaker face at Mania, with maybe Jericho being the only exception. But Jericho's efforts are best focused elsewhere. Also, it appears that Punk's role will be decided by whether or not Taker shows up, if he does it means that Punk will most likely be facing him and not present in the Cena/Rock bout. Which is definitely something I'm against since I have literally zero interest in Cena/Rock and while adding Punk to that doesn't make it a much-see it certainly is a preferable alternative.
For the record, I'm not sold that Taker is leaving this year off since him taking a Mania off has became a yearly report and those wind up high on my BS list like the MITB is returning one. I do at least concede that this one is actually possible unlike that one though. Basically, I'm hoping there actually is a wolf but I'm not expecting to find one.