Ask HN: When iterating, how do you decide which user subset to gravitate toward?
Let's say you've got a minimum viable product that you've released into the wild, and after a few months you see that two very different groups of people are using it regularly. As you iterate quickly and respond to user feedback from these differing groups with differing needs, you realize that given your limited time and resources, you need to focus on one group in order to create a well-aligned product that users in a niche market will find invaluable.
How would you recommend deciding which group to focus on?
(Real-world examples from experience would be great, but all thoughts are welcome. We hear a lot about iterating towards 'product-market fit' at a high level, but down in the mud, things aren't always so clear!)
Thanks! Mike