Okay, I want to discuss this rule before it inevitably comes out for Discover Uni since I just broke down and finally purchases the pack for The Sims 4 despite having blown $120 on Pokemon Sword and Pokemon Shield which I have to tear myself away from. XD
I'm not saying that I am predicting the mods, I am just basing on this from the features in the pack. Now, in the pack, you have three living options for college: Stay at home and only go to campus for classes and events, live off-campus and move out of your old house, and moving out of the house and living at the dorms.
My Rule Prediction: Since moving out of the Dynasty Lot is forbidden, I predict the Dynasty will have a pack rule saying that you can enroll in one of the colleges, but you must choose the stay-at-home option for housing and are banned from living off campus or in the dorms.
All in all, I am going to just use the first generation as a setup before I do anything with Britechester, to give you guys time to add in the rulings.