Thanks for your answer, Edi.
I also think that the grimoire needs some fix,like you, NTJedi. Especially in fire & earth, but probably also in water or blood. Perhaps it could improve with time in the game? Yes, as far as turns passe, there is less and less indies provinces, but it could be a great improvement for thematic or 'story telling / roleplay' maps.
And imagine an surprise attack by barbarians supported by mages casting nether darts or pillar of fire
But I am realistic and it is clear that it is not a priority.
I suppose that it is not moddable, as your answer suggested?
Q'Xel