I have been creating a comprehensive blacklist but more often than not there is posts with maybe ~20 score and 100+ favorites. I just wanna see quality content only on e6, and every time I check through my blacklisted posts to make sure I'm not missing any, I see high quality stuff with a huge amount of favorites but low score. If there was a way to utilize the favcount:>X in blacklisting I could properly filter this content, but it isn't.
I don't have any experience in site-building, so if it is too hard to implement or some kinda server load stuff, then that is that. But from my amateur programming viewpoint it really looks like a small jump from taking it from searches to using it in blacklist, and it would be a useful quality of life upgrade for people who use the blacklist.