Squad color
Well, it sort of already is in, though you need eagle eye to spot the difference. The last time it was discussed in this thread, and so far the response was “I’ll pass on the feedback to the team.”
https://forum-en.gw2archive.eu/forum/game/wuv/Separate-sub-squad-color/first#post5940701
oh my bad i did not know already a forum on this topic a dev can close it xD