Considering you're the one who posted it though, you'd need to participate as well as relay how to disable EXP gain to those that want to participate. I'll have to keep it unapproved til you know how. I'm sure that if you check out the ROM Hacking section, you could ask and find a way to do this though. I think they have a Q&A thread there, so just check that out and see if anyone there can help you out. :)