Vimium is nice, but if you've used VimFX/Pentadactyl or other XUL based VIM addons, the WebExtension versions are lacking in important ways. The biggest proble

Vimium is nice, but if you've used VimFX/Pentadactyl or other XUL based VIM addons, the WebExtension versions are lacking in important ways. The biggest problem I have with them right now is that FF entirely prevents addons from working in "system" pages like the settings pages or the new tab page (NB this includes some actual web pages that Mozilla has "blessed"). Another problem is that there is no way to focus the address bar programmatically, forcing addons to use clunky workarounds like the Vimium omnibar, which has an inconsistent UX compared to the rest of the system. Hotkeys, especially in a VIM-oriented model, must work consistently across the entire experience, and Mozilla has decided to explicitly disallow this for addons. Vimium is better than nothing, but due to limitations of the WebExtension system, is strictly incapable of providing the browsing experience that I'm used to. In its current state, it is not a suitable replacement for me. The same is true for the various mouse-gestures addons.