"Old Age" system in Dom3 - need some info

[Maltrease]

I like the idea of an old mage learning additional magic. A lot of nations descriptions have the old mage with lots of magic and then a young mage (who is on the same career path as the old mage) with less magic. So it would make sense to me that the mages could learn new magic over time.

Maybe each year they are around a mage gets some kind of "credit" that could be used to discount empowering in certain paths? I'm sure balance with this could get real tricky... but it could make the age mechanic more enjoyable (gaining power) instead of simply trying to stave off death and uselessness.