Or call it "Core Cafe" or whatever, the name doesn't matter.
Basically it would be an instanced area a little bit like the ATH, but would generate a new instance when you enter rather than dumping you in with random people. If two or more people in the same guild or in each others friends list enter at roughly the same time, they'd automatically join the same instance.
The purpose would be to have a quiet area where you could chat with friends without being bothered by other conversations, beggars, or the ever-popular fire-pot trolls in the ATH.
Some possible amenities: A crafting machine, Boost, an AH interface.
Could make it so that certain amenities are only accessible to higher level knights; like Boost would be available to everyone, the crafting machine would be available to people with T2 clearance, and the AH interface would be available to people with T3.
I was JUST thinking about the exact idea for the east side (exept it was a garden).
But the amenities with teir clearance is not good.