Feedback is King - The power of design partners
https://www.productfoundry.co/issues/issue-27-the-power-of-building-for-one
A design partner is a customer (who usually isn't paying) that has the pain you're solving so badly that they'll be your design partner. They'll agree to give you feedback to help shape the future of your SaaS to help themselves. It's a win-win.
