I like acting for myself as a director. I act and I know that I'll have a chance to have some say in what gets used and that I'll be able to give myself enough takes and be on the same page as myself about how the scene should play.
I have worked on very good movies that have been buried, and I've worked on some resounding mediocrities that have been paraded through the marketplace like they were masterpieces.
People have given me classified information, but always with the disclaimer 'This can never end up in a book.' And it never does.