I actually don't really want a university pack, which I know is an unpopular opinion. Maybe it's because I'm a student, but I found University in Sims 3 to be extremely stressful. Not only does your sim have to take care of their needs constantly, but they have to study every day of the week, go to classes, and pass exams in a very condensed period of time. In addition, you are quite literally stuck in the University world until you finish/fail a degree, which drove me insane. Besides feeling cut off from the rest of the game, sims you meet there do not come back with your sim when they return home. I remember having to go through hoops to have my sim marry her university boyfriend, who I later discovered had cheated on her while he was away without her. I thought the pack as a whole wasn't very fun because of the added stress and trouble which came with it.
If they do release this pack, I would probably only buy it if they made the university a new world you can travel back and forth from at will (maybe have a couple dorms, but the option to live at home and commute). I would also hope that they de-condense the school term and make it so the maintenance and studying isn't more than that for a job. That way you can explore campus and university life without feeling your sim is always behind in term work. I also think the payoff for going to university should be larger, starting your sim at level 2 of careers they didn't study for and maybe level 4 for their subject of choice.
Overall, I'm not completely opposed to this pack, but I'm not anticipating it and I think that several improvements from sims 3 are needed to make it worthwhile for me personally.