Wil Wheaton... oh wait, wrong
Ummm, I'd have to go with the place looking and feeling like an in-game cantina. Not saying it has to have Holo Dancers everywhere, but more the fun upbeat music, people could have separate stations focused on certain points of the game...I would want to see it done as a giant Roleplay session.
Essentially the Cantina Vendor - he sells drinks.
The Mod/Enhancement vendor - he tells you stuff that's confirmed for development, and takes down your suggestions for things they may have forgotten...or at least sets up a survey or something to gauge responses of what people want to see.
PvP Vendor - he tells you why he hates Melee...err, what he's going to do to fix Melee in PvP, and other general PvP fixes.
Then I'd like them to have a live band, all in bith costumes of course, and some appearances from cast members - from the movies (I'd like to meet Anakin, The voice of Vader, The Emperor, Mark Hamill, Yoda!!, etc), and from the SW:TOR Voice actors. I'd like to meet the voices behind the companions (more than the voices behind the class players) and some of the story developers...I know with me saying I'd like to meet the actors from the movies that takes it away from just TOR, but that aside, if it's just TOR, make sure the devs are there, at least the ones focused on plot development and stories. I'd like to know their take on how some of these ideas came to them and how they got such a great flow to their class stories going.
...You said you didn't care how crazy the ideas were... just saying.
I'd pay to see that stuff...but only if it came to Canada.