The Minimal Lovable Product is only the first step towards releases which are appreciated by your Users. It is hard to predict what kind of functionality you need to include in a year or more. Measurements, changing needs and environments will have impact on your services/solutions. The trick is to deliver value with each version.
An holistic indicator for the user satisfaction is necessary but qualitative research will give you the input you need for setting the functionality on short term. That gives you the opportunity to react very quickly but also to question if you still need to develop/maintain the service/solution.