New member here but have been scanning the forum for a while now.
It used to be said that “the customer is always right” but far too often nowadays this is not the case. Furthermore people will pay for what they want.
With this in mind, I propose a new adult performer compensation system that would be mutually agreeable to all parties involved (studios, stars, and fans). Here’s how it could work.

Adult Performers
Performers could use marketing research to find out if there is significant demand for a particular scene in a genre. A poll on their websites (if applicable), forums like this and retail sites like Adult Video Universe for example could be helpful in data collection. Then, using social media and their websites they could announce that they are willing to do a particular scene if a certain dollar amount is reached in a specified period of time.

Fans
Fans would then pledge a certain amount based on their means using their credit or debit cards that would be captured by a reputable third party entity like CCBill, Epoch, or Paypal. These funds would be captured at the time of transaction and refunded to the fan if for some reason the target amount for the scene was not reached in allotted amount of time or the performer was unwilling or unable to live up to actually doing the scene.

Third Party Entities
The third party entity would be responsible for reporting to the pledger the amount that has been raised via email, etc over the course of time. This would prevent the performer from sitting on one amount yet reporting another to the fans.
Studios
The studios would still be responsible for paying fair market value per scene despite what the performer raises on his/her own from their agreement with the fans. Studios could promote and market the performer’s particular scene in the genre as they already do. However, this would be revenue neutral for the studios in terms of additional compensation for performers.
In the end, fans get the porn we want, the performer earns more, and the studios sell just as many units if not more.

Practical Example: Based on several polls, many fans would like to see Alexis Texas do an interracial scene. Alexis Texas agrees to do an IR scene with Mr. Marcus if she is compensated $10,000 for the scene by the fans who want her to perform the scene by 10/15/11. She tweets this as well as promotes her fund raising drive on her website with links to the third party for payment. I along with a few thousand other fans pledge a few bucks and the goal reached by 9/5/11. They go into production mode and by 11/1/11 “X” studio releases “Alexis Texas Goes Black: The First Ever Fan Subsidized Adult Film”. The film is a huge success and even wins an AVN. More top tier performers adopt this model and the industry is changed forever. THE END

BTW, I’m not in the industry at all just a fan.