If you are going to make it so allies can't help base, then what is the point of allies anyway? You should increase the max capacity of gangs if allying doesn't work, maybe to 30 or 35 max. Also, the less players allowed to base in a gang gives the advantage to the higher skilled gangs. For instance, If gangs could only have 5 members each Obsidians top 5 members would destroy everybody. If you increase the capacity to 30, then the "god" players won't be the only ones basing. Like Obsidians top 25 members are easily better than GPN for example, but say GPN top 30 members are better than Obsidians top 30 members. You probably don't understand what I'm trying to say, but either way this idea is good i like it just make sure you understand how it's going to work.