Well, for starters I would guarantee a jump to OU for Yanmega, if that happened. Let us not forget that Yanmega has a fairly decent movepool to couple with that Draco Meteor. Access to Giga Drain, Air Slash, Bug Buzz... Aside from a few Steel-types, not much would be able to resist it. It's scary fast, too. That would let Specs become pretty popular. So popular, that I wouldn't be surprised if they brought Genesect back down a tier in order to counter it.