I think the cost for increasing village authority is about right, however the density of banners in brodgar is getting a bit out of control.
Dev's have a walk through and see if you think it's ugly or not.
If we could have the same banner for twice the cost, with twice the outer radius and the same inner radius, we'd be able to make a far more aesthetically pleasing city...
Please don't double the inner radius as well because that just seems to force horrible flag layouts.