I’m sad that I’ll have to stop using VimFX, it was the best Vim plugin I could find. It was lightweight and did just what it had to (I absolutely hate the custom search/address bar thing in Vimium). My alternative right now is Saka Key. I hate the default keybindings, but you can customize them all you want. The thing I miss the most right now is being able to focus on the address bar (pressing “o” with VimFX). I’m not sure if it’s possible with the current WebExtensions API.