See, personally, if someone doesn't like my ideas I don't work with them. It's simple. I'm happy and successful. I don't change my ideas and strategies based on criticism, I simply ignore the people who are criticizing because they aren't the ones with ideas, they're the ones who say why ideas are bad...IMO
Your rate of return notwithstanding, remember that you're soliciting to a membership made up of people who are already collaborating on projects. Organically.
Some are novices, but a good deal are working professionals in the production trades. Marketing is an area where many of us could use further insight. That said, you might want to reconsider your tone, because your words are beginning to betray what I believe are your good intentions.