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

No, the turtle should definitely replace the Murmillo unit for the Nagas.
P.S. The icon is good.

I was thinking we could move the Priestesses and Kensai to a lower tier and add Naga generals, but turtles are too large for the fourth level; they would be better suited for the sixth or seventh level.
And there's a very interesting chain of islands on Ashan.

The Orcs have moved in a different direction, and I think these jungles are uninhabited; lizards could live here.