As long as they "get it" and can perform, I don't care who goes into pro-wrestling. Some obviously don't transition well, though. The most surprising was probably Rousey. Very quick study. Looked like a natural in there. I can't think of too many who absolutely floundered, though. Dan Severn was just awful, but I don't think he even tried to transition. He was just there for a quick buck. I think it was Frank Trigg in TNA who really either didn't get it, or was booked to be an "MMA guy", and just got booed out the building for being boring as fuck. Shamrock actually had some rocky beginnings too, before he eventually figured it out and quelled those "Shamrock Sucks!" chants.