Not sure if it was brought up before, but there is one new blacklist-related thing that I really don't like.
For example, I have the following blacklist rules:
Let's say, I do a search for some_copyright. Site returns me a page with 1 post corresponding to both strings in blacklist.
In this case blacklist notice will look like this:
Blacklisted
In Danbooru v1, I would have to click both of these entries for the post to appear. Now the post becomes visible if I click just one of them.
Also, before, "clicked" blacklist entries would change color from blue to grey, whereas now they don't.
All this stuff just renders blacklist almost unusable for me.