Would people pay for this service?
patio11: I think the people who would most benefit from your help (startups who are likely to fund and want to improve their relative position) are going to see "small equity position" and think "Awww dang, that is going to cause us a million and one legal headaches and is an asterix we will have to revisit in every funding round from here to doomsday -- pass" and the people who are likely to be the clients from heck ("Our deck isn't quite ready yet, but we have a napkin!!") are going to see "FREE!" and jump at it.  And then whine at you when they are, predictably, not successful at getting funded, despite "YOU HAVING AN EQUITY STAKE!!1"Basically, it is the classic adverse selection problem that is eliminated by charging people money.