Tested and nope can't "disband" Daimyo, we could have him charge yari head on XD
Btw all my ideas were merely a brainstorm of feudal features :)
As for the clan I really don't have any preferences, was simply concerned about the lack of generals: for example in a campaign I got many sons to marry very early and in 60ish turns the grandchildren came of age, plus some random generals joined in the mean time...
Another time in a Uesugi campaign made Kenshin marry at the very beginning and that monk didn't consumate for the whole campaign :D