Such a great idea and from what I've seen so far while playing around with Block Visibility, the implementation is flawless too!

The block editor and site editing are starting to show us a whole wealth of possibilities, and I'm really looking forward to the future and the things that developers/authors come up with next.

I have to admit to being a touch skeptical when Gutenberg first appeared, but as it matures I can honestly say any doubts have well and truly disappeared now. The simplicity of doing stuff that was previously at varying levels of complicated is simply awesome.

I'd buy you a beer if I could, Nick.
Cheers!