Too many to mention really but here's 3 major ones;
Wildfire's 2nd inversion over the cliff. The track climbs slightly to be able to invert, losing momentum, momentum which affects the entire rest of the ride poorly.
Helix's final inversion. While it does offer a different sensation to the rest of the ride, it's hot garbage and ends a brilliant ride on a low point.
Outlaw Run. The final of the two rolls. Didn't want to put this in because it seems like I'm picking on RMC a little and the rest of OR is fan-bloody-tastic but why the **** did anyone think the 2nd roll would be a good idea? It's nearly vom inducing as it's so slow.