1 tribe even per 5 worlds isn't enough, imo every tribe on every world shouldn't be how many elites can you find, if every tribe had 75% good players, and 25% active newb's you would see a difference, and i don't think there would be a huge change in said tribes success.
I try to do my bit as in rarely join "leet" premades, and do as much teaching as people who want to learn, I try to boycot undue flaming of new guys and try to keep forums as active as my imagination allows.
Maybe these are all bad idea's and non of them work, but id sooner do whatever I can than just moan and whenever anybody puts in a bit of effort or tries to do something about it just tear it down and say it wont work.
As you said a bit earlier, "I don't play this world and probably wont be playing another uk world"
Unlike you I intend to, so forgive me for giving a dam