This is what I was referring to earlier on when I went on my "increasing capacity" talk early on, Universal artificially congesting areas of the park.
I didn't mean to increase park capacity (they rarely even get close to the actual number) in terms of people who can physically be inside, I meant increasing actual attraction/show capacity. HHN is too congested in certain areas while underutilizing other areas. They need to rethink house locations to prevent massive crowds from forming (I can understand Kidzone disruptions this year, but NY needs a fix), they need to bring back queue stanchions for food booths, stop placing props/booths that bottleneck guests, etc.
There is no need to have that Chucky booth allow maybe 2 guests to walk by it at the same time. They keep having to stick a TM out at the Surfer Boy booth to keep the line from stretching into the street... why did they get rid of queue stanchions?
If you want that to be a draw/capacity improvement, the tribute store has to move locations to increase queue capacity. Queue right now is only able to accommodate 30ish minutes or so worth of queue (yes, Universal lies/exaggerates waits so they don't have the queue stretching out into the street)
Diagon is no longer the quiet rest stop for the event, just as busy as during the day, the event just got very crowded this year and it didn't appear to help, but it really did.
The Hollywood/Mels/Transformers area of the park is severely underutilized, getting rid of the queue in front of Music Plaza is a significant improvement just to allow people to rest on the turf (look at how many people are seated at the curb in front of Minion Cafe/Fallon).
Put a sideshow for the NY scare zone in the Blues Brothers show area to entice some crowds to move there or a stage with smaller acts that fit the theme. They often put a stage there during Rock the Universe, so they can try with HHN.