Direct feedback I haven't received any yet, I received one indirect feedback from a user who switched to the paid plan and it gave me an incredible boost in continuing to do better for my AI-based crypto newsletter :) quickviewai.substack.com
In my case, an active user contacted me and we started talking about the functionality and he found a use that gave me an idea to improve the function.
@ixord Active users are the assets! I feel talking or taking their points into the consideration is the best approach/ idea but we can have a tunnel vision when we are developing a product.