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

I think it would be good to create something like this:
1. Rogues - based on the peasant
2. Mercenaries - archers, based on the scout
3. Pirates - can be borrowed from NCF
4. Free Mages - based on druids (or can be based on the monk)
5. ?
6. ?
7. Thunderbirds

Added 1 minute ago
As a city, you can take an old church + unused objects (tents, an old human town, etc.)