If we are looking at current WWE stars yet to debut, then there are a number of great talents currently in NXT.
British Ambition are current WWE NXT Tag-Team Champions (Adrian Neville/Pac & Oliver Grey). Brilliant Tag-Team. Put them in a match at Wrestlemania with The Briscoe Brothers and I'd mark out huge.
Paige as well provides a completely new look to a stereotypical WWE Diva. Can't wait for her debut.
Who else.. El Generico, Kassisus Ohno (Hopefully reforming his Kings Of Wrestling Tag-Team with Antonio Cesaro), Bray Wyatt...
There are a number of NXT Talent that have great potential in my eyes. I just hope the WWE do something interesting and relevant with them once they get the call-up to the main roster.