The whole tearing out the innards of a baby thing is both disgusting and lame at the same time. I think the creativity Mondo is showing with these MMM is great in terms of producing an unforgettable experience, but if I would have flown down to Austin to wait on a bus for an hour to see a baby 'torn' apart for an average poster I would have been livid.
The hype machine sounds like it was at an all time high, but it will never satisfy people going on a whim who might not like the 'mystery'. If they wanted the best reaction to reward their hard prep work, they should consider advertising the title of the film. The audience would probably then help tear the babies up and see their favorite film, after arriving in town from all over the place.
That, in the words of fallen, would be EPIC.