On officials, maybe a way to get rid of the cheap spider webs and land dotting being built is to change the radius for land claim on tiers. I know people like to build in it for cosmetic reasons. But for a majority of officials, the problem lies in that you get the same claim radius for less work.
And for place-ables, claim radius should be as low as possible, and altars should have to be built on foundations (because their radius is needed to space altars apart from each other).
T1—2 foundations
T2—10 foundations
T3—20 foundations.
I think this would make people at least build outer walls with T3 to claim their land.