Add A Blacklist/Tag Filter
There needs to be a way to block videos (and other content I suppose) with certain tags from a user's searches. Sort of like the current search engine's checkbox-style content search, but inverted.
Perhaps the search engine itself could be modified to change the checkboxes to three possible states for each category: blank for no preference, a + for mandatory (only get results that include that category), and a - for blacklisted (do not return results that include the category).
Seriously why is this not a thing, so many things i wish i could just have filtered out and not have show up in my search results.