I've had these materials sitting on my desktop for months, but haven't had the motivation to post them. In a sense, they don't really matter that much.
The above is a picture I took after the "Christ-mosh" festival. It was a wild night, with tons of people and tons of bands - yet the good management provided by Fire In The Skies and Matchless Records made the night go off without a single major issue.
Now, this here is a chart showing the relationship between show attendees and the number of bands that played a show. The progression is decidedly non-linear, and I would argue that the "sweet spot" is found with a 4-band show. Even though the 5-band shows had better average attendance, 4-band shows are easier to run (from an audio technician's perspective).
You wouldn't think that cutting out one loading cycle and mid-show changeover would be as big of a deal as it is, but speaking for myself, the impact is very noticeable. I feel like the show is just a better experience for bands when things can be done at an unhurried pace - and when the show is better for the bands, it's almost inevitably better for the fans.