Seems like a sensible idea. Oftentimes with ERTs, when they arrive, they get split up and then they’re separated for the rest of hijack thanks to the chaos. You can make valid arguments that some of the more ramshackle ERTs (e.g. CLF) would lack a tracker for their Leader but, with USCM squads having SL pointers, it seems logical that the more elite ERTs such as VAIPO, UPP and RMC would have them.
The pointers purpose is to keep squads cohesive and to help new players from getting lost, so I think ERTs would have a more substantial impact with this change.