University needs overhaul for teen sims.
Since it only takes about 3 days to get an A in high school and start getting the offer to graduate early (which happens every day once you do have an A) teens can feasibly go to university a week into being a Teen and then spend most or all of their university time, as a Teen. Many things at university can't be completed by a teen though.
These are the few I remember.
E-sports or Sports scholarships can be applied for and obtained but teens will lose them after the first semester since they can't participate in E-sports or Sports. I think you can apply again but I forgot to try.
The university aspiration to tutor students only works for young adults. Teen sims have no ability to complete this aspiration unless they age up to YA.
Obviously the big one is that if you successfully graduate university as a teen you still don't have access to any careers. This mainly affects immortal teen werewolves who no longer age.. Even though you can work around this by eating a moonpetal and aging up, you lose out on staying an immortal teen werewolf. Now that teens can graduate early, they should also be able to enter the workforce early as well.