The main reason why this thread hasn't been escalated, even though it has tons of support, is that it isn't really original. All large networks have some sort of clans, guilds or squads system -- it's basically a standard feature in all large mini games servers. When Cube can afford this network-changing feature, it most likely will, but as of now, I think there are many things that have a higher priority.
Because suggestions aren't being escalated doesn't necessarily mean they haven't been accepted, if you get what I mean.