I agree, but I think the consensus of the thread is to wait and see how it all works out in alpha and beta testing. This close to the test release it would be counter-productive to start tinkering with these things anyway. The mechanics of the game itself - flight dynamics, combat, HUD, menu, trading system & economics, the P-P instancing system, etc - will all be nailed down first.
The prevailing feeling is that the grouping/alliance system that is currently implemented will also emulate the benefits of dedicated guild support. However in the event that this is not the case I'm sure the testing community will request something different or additional.
Guest access to a Teamspeak 3 server has also been arranged for alpha by one of the testers. It will be interesting to see if this proves popular, and there is nothing to prevent any group or guild setting up their own external chat system.
For sure, I have no doubt there are also many clans/community's like mine who already have their own facility's (forum/voice comms) and are itching to get into Alpha.