Sticklo a dit :

It's called creativity. It's called being open to suggestions. Not everyone reads the tribe chat maybe because of a busy active chat in your room, maybe because someone has the tribe chat deactivated to begin with, an invite to join a party/anything would actually make more sense then posting it in the tribe chat because 75% of people just ignore and go on, I can't say this idea will make it any better but it's a small effort and risk and probably won't even happen who knows! But this is an in-game forum topic based on suggestions only, importance or not, appealing ideas takes creativity and weirdness at the sametime and you still get feedback from the citizens of support/non support stating ideas.
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/Support
Fairly nice idea