Re: Rey Mysterio heel turn a possibility against Sin Cara at WM29!
Turning Rey heel would be a very bad idea. He is too over with the fans and they wouldn't buy it. I can't see Rey carrying it over convincingly at this stage in his career. He's like Sting in a sense: you can't turn him heel because the fans love him too much. If they want a heel vs face dynamic the only way to do it is to turn Sin Cara heel and it would work because Sin Cara is hardly over as a face anyway. Sin Cara will not go above mid card unless he cuts promo's in english.
In all honesty though, it should just be a face vs face match. Its the most simple and logical option.