Re 2.: Firefox (only) lets you update commands from your extension, so you could control everything from your own options page: https://developer.mozilla.org/en

Re 2.: Firefox (only) lets you update commands from your extension, so you could control everything from your own options page: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/commands/update https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/Web... In Tridactyl we give the commands generic names and assign to them as the user binds to them: https://github.com/tridactyl/tridactyl/pull/2582/files https://github.com/tridactyl/tridactyl/pull/2582/files