Rated 5 out of 5 stars

Another user wrote "It makes my fingers happy". I can fully agree with that.
Thank you very much for your great work dear Will!

This review is for a previous version of the add-on (2.2.4). 

Rated 4 out of 5 stars

Thanks a lot for the addon : )

What I really miss:
A full list of commands (the code) which can be used for keybindings.

Is there any chance, that mozilla developer will offer that for us?

In the readme you suggest:
"The Developer Toolbox (Tools->Developer Tools->Developer Toolbox in the menu) can be useful for poking around at the UI to find the name of an element to call a function on."

I tried that. Without any success. I have no idea how to extract the correct name for a command.

Further:
How to define a key sequence as a keybinding I didn't understood. I couldn't find any example.

Dito for "unset". I couldn't find any example.

I would love to see some examples in the readme : )

This review is for a previous version of the add-on (2.2.0).