This is a nice idea and the design is elegant. However, I already use Vimium's "b" key command for this, and it comes with so many other features too.
Backtick comes with a bunch of bookmarklets already available without you having to save them to your browser first. I'll also keep adding more commands to it as I get suggestions and find more to add.
The point is, Backtick allows you to discover new bookmarklets just by searching in the console while Vimium only has those that you've added yourself.