I wanted to see if the concept could be taken much further. Specifically to the point that I could be more efficient than using hotkeys.

I feel that I have achieved that goal for myself. However, I am very curious to get broader input on the concepts on which I have been working.

I have a concrete implementation I have built for Eclipse here with some animated gifs: https://github.com/dakaraphi/eclipse-plugin-commander/blob/m...

The conceptual idea is roughly described here: https://github.com/dakaraphi/kavi

If others like these concepts, I could look into providing implementations for other editors.