CutieMonica
Terrarian
I made this image forever ago, but it still holds as something I'd like to see added. It'd be able to create lines between blocks where there usually aren't, including making lines when it's surrounded by itself. This means for builders, you can use the same material with distinct lines or have things like dirt and grass blocks that don't connect.
A bit of clarification since some were confused when I posted this on Twitter, it wouldn't be able to remove accents that exist by default, just remove player-made accents.