It works great for me on FF DE 56.0b6 (64-bit), except for *Open in New Tab*, follow the link marked *Next* and some other advanced commands. All of which will probably be solved soon enough.

I loved the tab search feature (so I can have a clean interface (hidden tabs)) and sort of a replacement for Tab Groups for the time being in 57+.

I stopped trying to make my browser behave like my text editor years ago. Some people tries to compare Vimium-FF to Vimperator or something of that sort...

Learn the reasons behind Web Extensions: Firefox has become faster and more stable. The old model was unsustainable from a practical standpoint (start up times, memory leaks, user information leaks and so forth).

Adjust your rationale and be happy to still have a NORMAL mode to begin with. Firefox isn't a console text editor. I thank the developer and the Firefox Team for sharing their efforts toward a more pleasant web experience.

If you don't like it, try and make respectful arguments or fix it yourself for once.