I'd make one, like /t/metatribes or something, but I feel like it should be officially made. Or would that be a good idea to just make now?
I too think an official list would be better. Maybe you can contact an admin about it, or make one now and ask for their blessing :)
I'll PM /u/teamsnapzu and see what they think.
Besides /t/recruitment and /t/newtribes, what other Snapzu related tribes are there that should be noted of?
/t/ideasforsnapzu (if anyone wants to post suggestions or ideas for the admins)