Soon, however, member wise, TT will overtake TMF.
The problem I have with TMF is that when I post something over there, I would think to see the post I just "subscribed" to in my User CP, but I don't. It's a pain trying to find the thread I posted in again. A minor, rectifiable nuisance perhaps but nevertheless currently annoying.
That all being said... I think it's a matter of time before TT becomes the "auditorium" you speak of Rick but that's my opinion.