I like the idea of potential different entry points based on tickets, but how do you clean out those with an earlier ticket window.
Honestly thinking through it some more, I think Stay & Scream may be part of the big issue, and I don't think it really benefits Universal (other than the ticket for it no idea how many of those actually are sold). When you're stuck in the pens you really can't do too much, unless things have changed since the last time I did it years ago. I never saw anyone in any of the shops or buying anything, you just get your little spot and sit there to melt in the sun except back when Finn's was the place to be.
Once its time, they completely flood ops in random directions. I guess it does move people to the back of the park faster, but they could certainly find different ways to manage that by using Diagon Alley or an entrance from Suess.