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

So, it seems like there won't be much to rework; the main issue is to create/edit existing/download icons from the internet for some racial skills and abilities. I can change the names and descriptions myself. Ideally, create corresponding building models related to racial skills (Artifact Forge, Training Halls, etc.). That's it. I'm not insisting, but if we leave it as vanilla, it doesn't quite fit together (both in terms of logic and balance, although the latter can be fixed). And even if we later adapt vanilla skills to fit the logic, we'll still have to change something: the icons, the descriptions, etc.

Also, I might have made a slight mistake with the second option for the Nagas; training doesn't suit them, and it's linked to the Humans' skill.

If the idea definitely doesn't work, I'll drop it.