MMs need their pet level shifts removed. That would go a long ways to making them good on purple patch as once your on purple patch, even with incarnate shift, thats still a 5 and a 4 on your minions.
For overperformers, there aren't really that come to mind. I'd rather buff others up to the 'overpreformers' than nerf those. After all, nothing is coming close to old TW.