I think the only thing keeping Yanmega out of the OU is SR. If it wasn't for that, he would be just fine because his movepool and everything else is amazing. Now, if he was Bug/Dragon, that might be a different story
The nominees were chosen by Apocalypse, and they are:
To be posted at a later time ^_^
You know that typing might possibly make him go Uber with Blaziken actually. Dragon is a good typing, and even when fairies come out, the only useful and practical one im seeing will be Sylveon, but that's just because i havent seen it's stats.