I totally agree and think a Geo Art attribute would be wonderful as well! I live in an area that because of Power Trails (Rails to Trails, Food Series, etc) and Geo Arts (Signal, Dice, GS Symbol, etc) the 1,000 limit is easily hit within a 20 mile radius. And we have a small town! Within a 50 mile radius we have the PTA and Marine Corp Emblem. If people could eliminate those, they could create a PQ for each attribute (Power Trail, Geo Art, one with those eliminated) and get so many more results!
Please consider this.