I don't know if this will be useful for the leaders of gangs but showgb basically shows the playersin a gang base area.
The names will be shown together with which base area they are at.
Example: Gang Basers: ×Hoogie×[Mohawk], Nibbles[Bank] etc]
I believe that this would be useful.  

I really don't get this idea, from forting on classic yonks ago Idk how this would help a ldr much a ldr is there to give orders and take control of situations..(like i was coldr and would allways know if someone was slacking/not at base without this) So they could allways gchat for xplayer to be near the base or if got more than 1base then your bound to have more ldrs on who can say if they are there or not, this idea just seems like for a lazyafkatthisbase player and not really needed, better things that could be done instead of stuff like this imo. p.s this idea was already said bar the saying something to show it.  

Why do this when you can just add a "gang" option on the map where you can locate where other gang members are.