If you tell the girls from the start that you want 25 or 30 minutes of fighting, they will not fight all out at some point in the fight.
Think of it like running a race. If you know you have to run 800 meters, you are not sprinting from the start. In fact, you might not be sprinting at all. If you are told 50 to 100 meters, you are sprinting.
The long catfight was made to justify selling a $30 DVD to people. Now that technology is available to effectively deliver a shorter, more passionate, fight, it should be the standard.
Crystal video never made a real fight that was 25 minutes.
If you want longer fights, there are still a few companies out there that do this, but they don't have the passion of SF.
I know I just opened this thread up for other companies to draft SF, but I want other CF fans to know that the long fight is not the direction you want to push SF, IMHO.