I like the PGC maps which let me map caches in an area which would progress me towards some goal (e.g., caches hidden on a date for which I don't have a find yet). But in the local area, there are some caches I've decided I am probably never going to find. For instance, too near to a homeless encampment or closer to private land than I'm comfortable with or even just one I've given a good try to 3 times and just don't think I'm going to solve. For those situations, it would be nice to be able to maintain a list of these caches and then filter them out when building a PGC map.