I could see them doing something like this though. It is unlikely, Taker will probably keep the streak alive, but the match is no fun now unless there is a legitimate chance that it might end, and there is a very short list of wrestlers who even have a chance as being believable to beat the undertaker at mania. Triple H isn't even on that list, nor is Orton, Edge or Cena.

The only wrestlers off the top of my head that would even have a slightest chance of beating Taker at mania are:

Hulk Hogan
Ric Flair (if the buildup was right)
Stone Cold
Shawn Michaels
Kane (just because of the long history, Kane hasn't been at the very "top" in a long time)

And thats about it, and most of those guys are retired or not with the company any longer. It would cement HBK's status. HBK still has this prestige about him, he has always been better than HHH and a bigger star.