LOL @ Kane Knight quote.
I haven't watched WWE (an entire show) in over 2 years, but here's what I think:
They should make Shelton Benjamin or Randy Orton the killer.
Randy Orton simply because he's the legend killer...and it adds to his 'legend killer' (not to mention, reviving his career).
Shelton Benjamin, because it atleast gets people to care about him again (although with him being so weak on charisma, it may not amount to much anyways).
I'd even strongly consider making John Cena the killer.