if you wish them to be effective as an AI I'd suggest not to give them #bloodnation, it would most likely effect their gold income too much for considering they have no special blood spells.
But some new spells would define the nation even more and not nessisairly blood magic since their mages rely on blood mostly making something that needs 5 death skill or 5 astral skill to cast would put a bit of strain on pretenders, also with adding a death spell, you could make something along the lines of "Risen Brother" anyway, hum, you know I'm not modding much and don't really mod my own stuff right now, I could help make some summons if you'd like, if you need some help or are too lazy to script a spell, just send me a pm with some details.
Good mod never the less, oh, except the banner,
http://cooltext.com/ I do most of my banners from here and modify them to my liking if I want something special in there.
Once again, this is just my opinion stick to your own originality, these are simply suggestions.