Just to add a few more things
Minor fencing along the exit (I'm sure to separate people leaving from people entering. Also, one section of the old security has been cleared out to be an exit for people who need access to hotels or Frankenstein.
All exits are via turnstiles. Many former exits are now completely blocked off and have guards.
Overall, I think it's pretty great. It was very smooth, although it seemed to be a low crowd day. But even on a crowded day, the waits will still be cut in half between the two major entry points (I know there's a third, but I don't think it will be used as often). It's exactly the same system as before, though the new entry points have monitors over the different stations, which can come in handy when they need to direct people more.
Feels a bit more like the Disneyland Resort entrance, but it's all closer and no tram is needed, lol. I do think in time the security areas could use some posters/artwork/seating (there's a small area at the bottom of the Jurassic Paring escalators that would make a good meeting point, but has no seating), but that can be easily added in time.