HURRAH. Major kudos to @ashuriphoenix and @theatropath for all the help; I am now once again the happy user of Firefox and New XKit! ^0^ WOO!
If you’re like me and didn’t know, it’s all described in New XKit’s post here how they got their functionality back. Just go to https://github.com/new-xkit/XKit/releases/tag/firefox-v7.7.3#_=_ and get the extension from there.
I REBUKE YOU, Chrome!
The Faery's Gifts 