the only thing that could be done would be limiting the players. = Land Claiming Stones - T1 3x, T2 2x and T3 1x . Clan would have T1 5x, T2 3x and T3 2x. T1 - small area, T2 medium area, T3 Large area (i wont mention how big area it should be in game… this is just an example)
You could build also outside of the Claimed area, but this structures would be “removable” by anyone at any time (PvP or PvE server) so it would not make lot of sense to build out side of it.
Placing down Land Claiming Stone would claim the are for you or your clan (i am not sure about the shape of the claimed area - circle, square, adjustable,… no idea). So Everyone would have to think twice where would they like to build and live or where they would like to have some smaller outposts for resources or thralls. Also, every claim stone would create additional area, larger then claimed area, that would prevent other claim stones to be placed so there is no chance for chines to build their blocked with “great wall” and there will be always at least some gap available for players migration .