Suggestion for the education thingy; when child is in your court and 6 years old (or 8, if you want to go with that as when they start education), you can either A; educate him/her normally, or B; use a decision to pay someone from a guild to educate him. You choose the class in which they receive education, and the base cost is determine by what level (1 costs the least, 4 costs the most). If you own a relevant province, its cheaper (if only because you are the government there) based on the guild (IE; Melee or Magic guild (whatever it happens to be called in the area) will definitely give a bonus, but Thieves and Dark Brotherhood (or non DB affiliated assassins) would probably ask for favours in exchange for slashing the price). A 4 star guild education should be cream of the crop; both expensive, even if you have relevant provinces, but liable to spawn with no bad traits and several good ones (to the point where even optimized characters would be fine with sending off extras to them). 1 star education should probably be slightly better than an average education (providing incentive for players to try it when they have low scores), but without the fine tuning of either directly selecting the guardian or personal education.
Just a thought; probably requires a lot of coding, but with any luck the basic idea makes sense.