This game needs to undergo a massive "shrink".. Get down to the base of the game, and correct it before continuing anything like adding quests lines. This university is way too big for this, developer your looking at a nightmare, It was obviously conceived backwards. You modeled out the building and plan to adapt it to suit a university? I would tell you to model out a classroom with a theme, make it make sense with the class size, then continue with that rooms basic volume, You can make plenty of interesting rooms, with that size situated, perhaps a few unusually shaped rooms. populate a building full of rooms and situate them in a way that makes sense, Nobody is going to know that a wall is 4 feet thick, or that there is a huge unused space between 2 rooms.
But why? For starters there is only enough dormitories for 22 to 44 ish people, depending on how many characters double up. Now think of how huge the "Main building" is. The high ceilings and grand staircases are a bit too far over the top, This music room seats 70, That lecture hall seats 150, But the chemistry room seats 12 BUT only has 1 lab station. Lets just say you choose to have a class size of 15 or so people, the chemistry station needs to have 15 lab stations with stools, with no desks. Make a study hall with 15-20 desks. But as for the lecture hall type of thing, I've never seen a university that had flat seating with desks and lecture halls, If you like lecture halls, go for it, But that one is way too large.
I don't understand why a person would go for something so grandiose only a handful of the rooms are open/populated, and of that, I can see the ones that are open are the smallest ones. Check your ambition, You know there is no way in hell you're going to be able to fill all these huge spaces in a way that makes any sense. I highly recommend you go check out a local university, understand its roster is an order of magnitude more than your dorms, and scale it down. If you were going for a gothic castle vibe, maybe you should have a think about making the building from an old church with schoolroom renovations/additions.