What he actually means is to be able to create a group wich spares money between criminals in a robbery.
About the ballas,grove,triad etc thingy. You should disable gang members to rob between their members since when you are grove and another grove rob you, you cant kill him.
mr.bean mean create gang any name, not like ballas, grove etc and if you create gang becomes tag before your name like: title gang "SanFierro,tag SF" [SF]Mr.[B]ean
I mean we able to use cmd /creategang [Gang_Name] and there are many cmds in the gang cmds like /g invite [id] , /g join [gang_id] , /g kick [id] , /g <chat> , /g disband - to remove the gang . Maybe it would be fun to play in the same gang and do some missions together .
I completely agree with the idea to forbid robberies between a members of their gang. It looks pretty good to create an own gangs, but... it's really more simple to choose a skin of the one of a gang you like.