This feature is designed to promote communication and collaboration across various teams (data scientists, analysts, product teams, and operations teams) for debugging and brainstorming. Once you tag a team member in a problematic area with a comment, they get an email notification. Upon getting the notification, they can resolve, reply and delete which enables them to adapt to real-time situations (just like Slack threads). It is designed to become a knowledge base of your insights and encourage problem-solving, keeping in mind the right context and being transparent makes for a great collaborative environment.
For example, @alex, why are cancellations so high in the eastern part of the city?
The grid selection picker is being changed to a visualization picker and is more detailed. Changing visualization and rendering data to polygons/boundaries can be done via the new Visualization picker.