My WM29 Prediction: This might sound ridiculous...
Wrestlemania 29 should include:
John Cena and The Undertaker vs. AJ Lee's posse (composing of 2-3 NXT stars)
Think about it:
1) The storyline will make sense if Creative can find a way NXT stars screwing Undertaker at the Rumble. As for Taker actually willing to team up with Cena? The two will do so since they have no choice but to team up, so they can defeat their common enemy.
2) It will build up young stars. Taker's WM opponents have always been older stars in the recent past. It's time for a change.
3) It will keep out John Cena in the world title and main event spotlight for a while. This will be his first non-title WM match in fact!
4) AJ Lee rises to super-stardom!
5) Obviously, the match doesn't necessarily have to be very long so it won't be too tiring and body-breaking for Taker.
6) Most importantly, it builds up for an epic match in Wrestlemania 30!