Support Volunteers can't make changes to Firefox and the developers do not directly monitor this site. To submit suggestions for new or changed features, may I suggest: Feedback: https://qsurvey.mozilla.com/s3/FirefoxInput/ Facebook: https://www.facebook.com/Firefox Reddit: https://www.reddit.com/r/firefox/ Twitter: https://twitter.com/firefox There also is a forum run by the Add-ons team where you may see talk about potential future capabilities of extensions to modify the UI (initially limited to colors, I think, but perhaps more down the road): https://discourse.mozilla-community.org/c/add-ons Please let us know if this solved your issue or if need further assistance.

hey, i've just chatted with someone from the addons team and improved apis for tab handling are on top of their priority list for the coming months...