It has happened so many times, that I've gotten over the first idea of me somehow being better in seeing things others don't. And I see others doing it to me, if they just have the approach of daring to take a day of reflection time.
The version I start with is not the feature, it's a model of the feature depicting parts considered relevant in the original discussion. The process of discussing was relevant, and I missed that. And the process of discussing would have been fueled by its participants reflecting on whatever external information they deem useful.
What I do is create another model. The value of my model is to give me time to build my understanding, but since I have more to build on than those who came before me, there tends to be aspects of my model that are missing and deemed relevant.
No model is perfect. The idea of constantly improving and looking for new perspectives, models, to replace or enhance the old is needed.
This time, my model won over the older one, and got promoted as the common piece around which we communicate. And I just wish someone like me comes along, looks at it and does not accept it at face value. But it does not happen to me by just showing up, but there significant work for creating a model of perspectives we may be missing now.