Spell Schools modding

#1

As you all know, by default, every hero can learn spells of levels 1 & 2 without any skill required.
To learn spells of level 3 Basic Wisdom skill is required

I would like to mod Spell Schools to be more like Heroes VII ones
In Heroes VII acquiring Basic Fire Magic skill grands you ability to learn level 3 fire spells
(but it doesn’t grand you ability to learn level 3 spells of other schools like Basic Wisdom do)
Is this possible to be achieved through vcmi modding?

#2

No it is not possible.

#3

A have added new feature request then: