Map feature for filtering by climbing type

I think it would be helpful to have a sport/boulder/trad (maybe grade, and eventually the rest of the search available in "Route Finder - Best Climbs for YOU!") filter when searching routes on the map. I really like the newer "pie charts" that are plotted at each location showing the split of each route type. They make it much easier to see what type of climbing is available in each area, but a lot of the time (say bouldering in LCC) it's difficult to get a "big picture" without zooming into the boulder specific areas, which means you already need to know where they are, or at least have some cursory knowledge of the area first. If I could plot only boulder/trad/sport on the map, one at a time, it would make searching for new areas from a higher-up zoom level easier. 

Anyone else think this feature would be useful?

This would be cool!