I suppose something could be rigged up like private school where they go and randomly get skill points, but then would it really fundamentally be any different than a kid going to private school other than being called something else? I suppose the chance of gaining skill could be made higher or even 100% of the time.
Thing is, it sounds fairly complicated and ideas are, quite frankly, a dime a dozen but people to program them are not. I guess anything's possible though. I remember when university came out I posted an idea that maybe someone could make the vanity mirror so that a sim could give other sims makeovers for pay and start a beauty salon. No modders picked up on the idea, I guess I didn't really expect them to, but Maxis eventually did now a year later with OFB so you never know.
Having been on both sides of it, both suggesting ideas for mods/hacks and having ideas suggested to me (moreseo in the Morrowind community, but a few times even in the TS2 community) I can tell you that it's a lot easier to suggest than it is to make.
Most modders have a pretty full plate already as they are generally few and far between and seeing as they are doing it with their own time, it only makes sense to do what they WANT to do and not what someone else requests.
Also, since a new episode just came out, there's loads of other things to do, updating existing hacks, fixing new bugs and annoyances etc. I don't even think most modders will have the time to do optional add-on type of stuff for a while.
Something I've also learned is, if you want something done bad enough, figure out a way to do it yourself. I know a lot of people will say 'Oh I could never do that' and I used to say that to myself about a lot of things but when I really tried and set my mind to it, I suprised even myself with what I could do. Believe me, I am the last person who thought I would EVER be able to use a 3D program. The first time I ran one I was like
Other things I wanted but not bad enough to spend the time to research it, learn it and make it, so it all depends on your priorities.