Has absolutely no one considered simply passing a couple Def and SpDef boosts to a setup sweeper like DD Char X/M-Tyranitar/Dragonite/whatever uses DD or something? Just use standard defensive baton passing to get the defensive boosts, then BP to your boostlessly-good set-up sweeper, get 1-2 extra boosts, and wreck ****. I mean, if the set-up sweeper is already good at what they do, then it couldn't hurt to pass a few defensive boosts to help them get set-up and to be able to stay in longer. It would only take a few extra turns to get there, and surely if DD M-Ttar (or something) doesn't need a full baton pass chain to do well, (doesn't need any baton pass chain is what I mean, if you didn't catch that,) then a more reliable mini baton pass chain could only bring good things. Plus, then if your chain gets interrupted, then you still have a good poke or three ready to save the day.
Also, someone mentioned simply passing an SD and speed boosts from Scoli to something, but I don't consider that the same thing.
Then the oponent just sends skarmory with whirlwind and you lost the boost.