Thank you!! This is awesome.

I wish it had no black space in the bottom

Does a great job of simplifying the Gmail interface, giving me more room for messages. Plus, they fixed the issue with the search bar not showing up when set to auto-hide. Nice!

Make sure your left sidebar isn't minimized before turning on "Make left sidebar autohide," otherwise it doesn't re-appear quite right.

Juste do the job (well)
I also use "Simples GMail notes" = Great !

Great idea but make that hover area bigger from top, now it working only from the area where the buttons are, just larger the area over it, to center perhaps.