Tribe rank

I haven't tinkered with it extensively by any means, but a feature I was hoping for is the ability to squelch global chat via rank. I try to be strict with my tribes glabal chatter. And they're great about it when I'm there just like my kids about picking up messes or doing homework. But when I'm not around they walk all over "mom" so to speak. Has an idea like this been tossed around at all?