Doesn't have to be teamspeak, with the metric butt-ton of online communications software out there... as for the "Virtual" table, what's stopping you or your group from having the DM point his web cam at a real table? Chances are he'll have at least two to get different angles without being asked to move the camera all the time... Something tells me that this is done already to some extent with some current versions of D&D and similar games.
(Wondering also if SFB could be/is played in this manner. Outside of the obvious SFC, that is.)
I'm also wary about how many of those that graduated in '87 would flock to this new venue. A lot of those interested in D&D in '87 are most likely sucked into some form of MMORPG already, and not likely to respawn in their favorite dungeon. An example of this would be my brother, although it is an extreme case. He's played EQ, EQOA, EQ2, WoW, CoH, CoV, and a couple of others. He's chosen one and stuck with it (EQ), and I don't think he'd pick up OD&D for anything more than to check it out, even if it meant he could recapture part of his younger days and play in his dungeon with people he once played with.
I agree with you 100% that this new service should be offered as a one time payment thing. Anything else might damage the fan base, since, like I said, it can be done cheap-as-free with what is already available.
IMHO, MMORPG's do a better job of immersion than my own imagination, and I feel that despite the free style and randomness of D&D, their draw on people will be the success/fail point of OD&D.
BUT:
If it was cheap-as-free, I might be convinced to play a game or two with others from here.
Czar "Just my 2cp" Mohab