Psionics are a cool feature in roalty, but they lack depth in acquiring them. The last patch added new ways in the form of becoming enemies or anima trees for tribals, but I think there could be more ways of getting a psycaster. Perhaps crafting or making a mechanical machine that channels the psi energy into people so they get psylink. (and also there are no other mods that do this)((and when this was one of the goals of last patch I think this would fit your series very well))