I'm not too sure how I'd go about submitting this apart from a pull request but I genuinely have no idea how I'd make it work in substratum so I'm just creating an issue. I compiled and attached a Twemoji ttf that actually works (numbers work and spaces aren't broken). I tested it by modifying the iOS Wings APK and noticed it didn't apply system-wide, only in the keyboard and some apps which I found strange but also found that the iOS one did that too. Not sure if that's a problem with that method or what. Twemoji.zip
For those interested, you have to compile from Google's noto-emoji repo, then extract the ttx using ttx [filename], then find all instances of broken characters (spaces, numbers, etc.) in the ttx file and delete them. Then you remerge the ttx file with the ttf file using ttx -m [filename.ttf] [filename.ttx] and it should work.
On S7 and probably S6 and Note5 as well, although the sfinder itself in qs panel is gone, there's still some space left between the clock/date and qs icons.
Maybe it's because the marginTop value in layout/qs_panel_sfinder.xml is hardcoded, not referenced from dimens.xml.
Could you adjust the layout for these old devices please?