My guess would be "no" because the average guest can still get what they want done in one night, regardless of when they come.
We, collectively, are the weirdos that consider it too crowded if we can't complete 10 houses in standby, a show, extended time in zones, and food all in 7.5 hours. The common guest considers the trip to be a success by getting through a handful of houses, buying a beer, and skimming a zone as they roam the park. When that no longer becomes feasible, Universal will have to make changes.