My sim gets promoted in the same time as finishing their degree.

There's no real word yet on what specific rewards will be after graduating, just know that at least getting ahead in careers is one of them (though you could do that already in many other ways outside of Uni).

I also felt like that leaving the new careers open for everyone just means you can completely disregard going to Uni for them anyway (assuming the rewards aren't that interesting), because careers as they are require minimal effort to excel up higher levels, with but a few exceptions. I understand that locking them to having Uni degrees only may not be something everyone would like, but isn't the point of the pack to play through university and work to unlocking such rewards?