So are they really extras when you're providing the extra funding for them to walk around with a camera, film, and edit the footage into the documentary? Can I just pay for the game without helping pay this cameraman's salary?
I'm also willing to open up the steamapps folder myself, copy the .mp3's, and organize them on my external myself.
As a fan, I am very happy to help out with this process by doing these tasks on my own time. Now let me pay for just the game and not these extra funds added on to justify the kickstarter.
Or maybe Double Fine could be honest and say that "Hey, we want to make a documentary and organize our .mp3's for a soundtrack that we will sell on Steam. Kickstart it for us

"
That'd be great.