land deforming

BTW terrain deformation using CSG is how the planets are actually created. The system was designed from the beginning to be continuous so that we could continue to carve away at the terrain using things like asteroids.

oh, so then it is already there? x)

It is, but because of the current pathfinding system it'd be pretty stupid to set up a few Lobbers nailing craters in a line to create invincible walls.