The Chain - Fleetwood Mac "You'll never break the chain"I really don't feel like BP is busted in any shape or form in LC. Unlike OU which had multiple tools to essentially prevent BP from being wrecked, LC doesn't have the convenience. First off, we only have 1 Magic Bouncer, so that puts a lot of pressure on it to do any sort of job well, and it leaves ample opportunity for Taunt/Encore/WW/Roar to just mess everything up. LC is also a lot more aggressive, so even after boosts, some Pokemon aren't taking hits overly well. Knock Off can completely wreck a team because losing Evio/BJ is huge to maintaining the chain. As mentioned earlier, hazards, particularly Tspikes, ruin a chain. I might be able to think of some more but that's all that's coming to mind atm.
While i don't disagree that there are things that can break a baton pass chain, I believe that a well made BP team is actually capable of playing around Taunt/Encore/WW/Roar. LC Baton Pass teams have always followed a very regular formula, because people haven't bothered to experiment. Tahu's BP team, which doesn't even carry a bounce user, is surprisingly effective against these types of threats. I'll be providing plenty of replays during the suspect test. As i've said, I agree that BP is not busted at all, however I think it is a little cancerous and could become worse if teams get a little more creative with it.