Why I'm not excited for University (worst case scenario)....

I'm one of the few people that found Sims 3 University living disappointing. It felt less like a "life journey" and more like a feature your Sims could do before going back to standard gameplay with a couple of extra features. I feel that was in part due to 'Young Adult' already being in the game and also making the University World being a destination world therefore being restricted to only one household at a time playing at University.
I loved the feature in Sims 2 where you could select scholarships for teen sims and when the time was right, you could select the teen Sims which would join your Sim at University.
Given that Sims 4 has restricted worlds I suspect they will keep with the Sims 3 feature....