I had this thought last night, coincidentally before I saw any of this project stardust news. The new security perimeter, a wider Disney security bubble, isn't just for typical security and counter-terrorism efforts (preventing things like mass shootings in downtown disney or the parks). This is also for preventing mobs of people from swarming downtown Disney and the esplanade on capacity days, effectively giving the entire resort a gate that can hit capacity and stop letting people in. Before, the parks had gates that could close, but downtown disney was semi-public and the resort could still be penetrated by pedestrians and those trying to get into the parks. Now, they can fully integrate what is happening at the gates with what is happening at the parking structures. When Disneyland and DCA hit capacity, they can simply halt the security checks on the resort perimeter and stop shuttling people into downtown disney on the trams. This will prevent stampedes once galaxy's edge opens, and allow better staging of queues;
1. queues to enter the land from within the park,
2. queues to enter the park itself, and finally,
3. queues just to get on property.
If done correctly, this could really be a game changer for the resort and will be an effective first line of defense against chaos and unsafe conditions. It would also make it easier to evacuate the parks if needed. Imagine trying to evacuate disneyland when there is another mob of 10,000 people outside the esplanade.
Raising ticket prices and having better security on the ground, in addition to the work mentioned here, are only going to go so far. I hope that we eventually see a system of online ticket reservations ahead of time, so that people can't show up to a park once it is already at capacity. Since people don't stay the entire time, there will have to be some magic number of tickets sold, where they sell, say, 25,000 more tickets than the park's capacity is at any given time, taking into account that some guests will arrive early and some will arrive later when the morning crowd has left. Right now, this seems ridiculous, but when the park is hitting capacity and turning people away by 11 am every day in july, it might be the preferrable option. Turn the website and app into a digital reservation system, and enforce the purchasing of tickets an evening in advance, unless the park is not scheduled to hit capacity.