Without having read everything, the proposal that units can only offload where there are few enemy troops means that D'Hara, and other isles, would be pracitally invincible.
You'd have to disembark on the rural coasts in boats. I doubt D'Hara could sustain a constant militia in all its coastal rurals and even if it could it'd need to find a way to spot the boats from the rurals and deploy the regions militia in the right area of coastline. Though i've no idea how anything like that would be coded...
