Also, thinking about it, Brock beating Taker is a GREAT idea that will lead to building up future stars. No one on the roster is CURRENTLY on Taker's league except for Cena, Kane, and Brock.
Cesaro, Reigns, Rollins, Bryan, Big E;etc. have a bright future but it isn't believable if they could be Taker this year in 2014.
But let's fast forward a year.
Next expect one of the fresh young guys I just listed take on Brock Lesnar, THE MAN WHO DEFEATED THE UNDERTAKER. By defeating the Undertaker, it automatically gives Brock a sense of prestige, and enough time to build up their new stars to make them believable.
Prediction: Roman Reigns vs Brock Lesnar at Wrestlemania 31. Beast vs Beast. The new beast vs the man who defeated the Undertaker.
It sells itself.