Don't get me wrong, I love to play mech. I just think the amount of leagues in paintball is already massive.
If you can get something organized, it looks like you're in Akron, Oh which is about 1/5 hours from me. I'd pick up another GoG enemy and play. Limiting specific guns you don't consider as mechanical is whats going to limit your market. I mean an a5 may have the cyclone system, but its also a massively popular mechanical marker, so quite a few people have them.
I say go all mechanical, but if you don't allow pneumatic triggers, I don't see how an RT trigger is anymore fair.