It'd be really nice if the roadsigns didn't have hitboxes or if the old pathfinding from milestones was returned to them. I spent a while today setting up roadsigns following a river and had to remake several just because the roadsign blocked it's own path =s.
It'd also be really nice if you could see the arrow indicator for the roadsign you're extending off (just like the one you see on the sign you're currently building) of so you can get a clear idea of if there's anything in the way to the next roadsign without having to just guess and check (had some problems with deepwater and cliffs).