One of the things that bugs me in WS2 is that your opponent doesn't mind ending the match ASAP and letting it get an F rating, even though you have getting good ratings as quite high on your agenda.
To combat this, I think introducing a new stat type would help. It would be called "Pride" or something of the like, and it would detail the quality with which wrestlers would be happy with obtaining without disappointment. Obviously anyone having an A* is just plain silly, but would Shawn Michaels or Christian Faith be happy with an F?
With the stat you could also gauge how much room you could give your opponents in terms of opportunities, if you're up against someone who want at least a B you know you can mess around for a bit, but if they're happy with getting an F and their pay check then you know you're gonna have to really keep an eye out for that quick superkick that could end it after four minutes.