Ref: https://community.bistudio.com/wiki/addGroupIcon
Reasoning:
1) The underlying tech is already in the engine (for groupIcon / groupIndicators / friendlyTags/enemyTags / visionAid)
2) Would allow a truely performance friendly 3d unit icon solution (vs addMissionEventHandler ["Draw3D",...] + drawIcon3D)
3) Would allow a replacement for friendlyTags/enemyTags / visionAid
Thanks for the consideration!