RTF is a global modification that replaces all towns in the game.

I have another crazy idea about magic. According to the lore, we have 7 schools of magic, but in the game, there are only 4. Simply taking water, earth, fire, and air doesn't seem very good. However, we also have the schools of Chaos and Subterfuge. So, what if we did this: let's make Chaos magic the magic of fire (and put all the fire magic spells there), and Subterfuge of Chaos becomes the magic of water, and we put all the water magic spells there (using a system where you level up the skill and get a spell as a bonus, similar to the "Rune Shield" skill). That is, opposite schools would exclude each other. In addition, we can rename Enchantment to "Primal Magic" and put teleportation, raising the dead, summoning elementals, magic fist, and so on there (and, accordingly, elemental balance and similar skills). If the idea is interesting, it makes sense to develop it further. There is a small issue with the Academies: if, for example, it's logical for an elf not to have fire magic but to have water magic, then a mage should have access to everything (we can also take away Darkness from them, but elemental magic is inherent to them).

Added 14 minutes later
That is, such transformations (can also be done differently):
Chaos = Fire
Subterfuge of Chaos = Water
Summoning = Earth
Subterfuge of Summoning = Air
Enchantment = Primal

Considering the Orcs (they need air and earth), then it would be like this:
Chaos = Fire
Subterfuge of Chaos = Earth
Summoning = Air
Subterfuge of Summoning = Water