For quite some time I was proposing and proming "Simple list without any prefilter or additional logic" (retire that map compare workaround-> http://project-gc.com/qa/?qa=203/simple-without-prefilter-additional-retire-compare-workaround )
Maybe this could be implemented in Virtual GPS2 add new row? The way I see it (new button in add new row):
After pressing this button:
After pressing filter button all caches matching this filter would be pushed to V-GPS2.