Ideas and suggestions.

Regarding the first point – in this version, Water becomes stronger than Logistics in the late game; a single movement restoration spell alone justifies taking the school, and the other spells are also enhanced. Plus, the blue hat is enhanced with an additional control spell.

Regarding the second point – it's a very unusual mechanic for Heroes... limiting teleportation based on the number of hit points... it would be better to implement some other restrictions.