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

if you replace the Academy, there will be problems with their flying city! You see, Ubisoft placed abysses under them on half of the maps with the Academy, and the Dwarf city itself is a pit, but I can swap the abilities of the two factions; however, a flying city is still needed to replace the Academy's, for example, Vintral, but the abyss under it will have to be removed.

Added 1 minute ago
That's a good sign; just make the wings black, and let the sword be a color indicator.