Ok could you have packed more Ideas, Facts, and Subtle Sarcasm into that post. You could write for CPGGrey if you can do that on demand.
In the Middle U.S. tribe is in some areas a well protected term by many that grew up in the reservation system. I grew up near it, and some of the violent histories so I might be seeing ghosts. The word is a good word; but sadly if you start to have fun with it and per say call this forum the "tribal counsel" or "tribal tee-pee" or start to play you run the risk of unintentionally offending someone that had a bad go of it. For conversations no big deal, but when we name entire forums something it's a billboard sign and we have to consider all comers. I have 3 customers that are Native American and they think the Washington Football team debate is stupid and unnecessary; and then I know others that have a huge issue with it and consider it offensive and yet they have never had any chance to ever experience a reservation or the people that live there. So that's part of the reason a thread like this gets going so input beyond just a few can be considered. I'm not all in on P.C. but I am forth thoughtful consideration so as to not un-nessecesry exclude people; unless the call our beloved bikes unrideable; then all is far. In the mean time I'm leaning toward bike theme's names because these bike things might catch on.
For those that missed some of joe references here you go. If you don't know CPGGrey you've been missing out.