I think you're question about what is your greatest fear of failure for this project is valid.
I often ask that question when I'm building a new website or application. It's important to ask "Who cares?" and "Why are we doing this?"
My take is that you want to do this to connect with developers and build relationship. That can't happen in a vacuum. I think that if you connect with developers and build relationship, you'll be way ahead of the game and will in turn build loyalty, trust and