They added a lot of new street entertainment. Not much else they can do until new attractions open up. Losing Disaster, Twister & BJ at the same time caused a large capacity drop. Good thing they had added so much capacity with Diagon/Gringotts/HE, Springfield and Transformers previously. But with the big attendance jump in 2013, 2014 & 2015 that ate up that new capacity quickly.