I watch PPVs at a local bar and take note of the crowd as well. The biggest crowds I've seen were for some wrestlemanias where there was not a seat to be had and they had people queued out the door to enter. The smallest crowds I've seen were, well, no-one showing up for WCW PPVs until they finally just stopped ordering them in their death throes.
For Unforgiven, the crowd was smaller, altho not the smallest I've seen. 3 booths actually went unoccupied but they did fill up (with 1 person) after a while. 3 tables went unused, but there were people in the pool room instead of it being totally empty. About 20 stools were available. I've noticed a big drop in WWE merchandise worn/carried in by fans. I saw just two shirts: an old DX shirt and an HHH shirt.
I also noticed the Austin fans who were noticeable for their "What"? chant aren't showing up.
Benoit didn't get a reaction. Nor did Eddy. HHH didn't get a reaction, but a couple tables emptied out after his match. HLA got a mild reaction. Brock got no reaction, altho midway through his match a patron got into it with the employees and was thrown out on the street which distracted everyone for a bit.
I believe it's Hennig, who had just done the Mero/HHH angle where he was advertised to return on Raw. WWF got his Lloyd's of London policy canceled so he could come back. He wasn't happy about that and was fixing to walk out on them.