I would only say the defining AA's at UOR right now are the Goblins in Diagon and Kong's AA's, but that's not saying much.
As for USH going into the Family-Oriented direction, it makes sense. As long as they offer variety where they can put it, Universal doesn't have to stay in the direction of adult-oriented content, nor going all out kid friendly (as there needs to be some things that frighten kids like FJ and TWDA) but making sure that there is something for everyone. It's one of the things that Tokyo Disneysea has it going, variety for everyone. There are the fast attractions that are for thrillseekers, but there are calmer attractions for those that can't take it.
While yes, we don't know what is exactly coming to SNW for Hollywood (outside of what we can probably guess is a lock for Mario Kart); SLoP will be offering something that the park desperately needs. Re-ride-ability. Something with Trackless attractions is the different experiences that guests will always have. It's why attractions like Mystic Manor and Poohs Hunny Hunt are all-time classics; because it's something that offers variety in the way a guest experiences an attraction. And with the Trackless Technology with a simple concept like Pets, it makes legitimate sense.