Tyson Kidd said:
I am 50/50 about him being a heel. But I prefer as face. However as long as Christian stays face as the IC champ the feud wouldn't work if you ask me.
A heel Tyson has no charisma. Tyson has natural face charisma and a voice more fitting a face. His face is also more suited for a good guy and he has the build and skills perfect for a underdog, and a good backstory to boot.
And who says it is Christian Tyson had to feud with? Tyson doesn't need the title now. Establish him on Smackdown first and foremost. Then he can feud with whatever heel takes the title of Christian when it is time for Christian to either put a heel over or move up into the WHC scene.