I like the idea, but the logistics of complete strangers just linking up and have good discussion is pretty tough.
Sometimes the smart ones get put off by the mouthy ones and cant get a word in edgewise.
A guy named Tank over @ tgp used to do some source engine map modding for counterstrike source, and teh way he would do it is schedule a night with a limited curricula that he would post ahead of time.
(come to think of it, H-hour used to do something similar with GR1 over @ tg as well...)
Stuff like what mods to have, what parts of the editor needed loaded, sample map, etc, that way, once the "meeting" started, he would step through a few things and everyone listening could be at the same point, following step-by-step.
Once he got past the few things he planned on covering, everyone could ask questions, and form there, it turned into a free-for all. It was nice, a lot of guys got stuff out of it, and he got some help on some maps I think too. (mmm beta-testing)
That's my .02.
I'll bet there would be a waiting list if you could con a grinner into hosting a night.
but I'll show up to get walked thry by ducky too, or even to listen in on how Delyte's new map import is going...
Just a thought.