We use planner for all the project we are working between 4 teams and depending on the type of project it lands in different planner and different buckets. The biggest challenge we have is maintaining a view of Planner cards that have all these planner cards that are being used to support the overall primary planner workstream. There is no efficient way to connect these together and view them in one view. We then have to manually track all this to try to maintain a vision of the work that is being done by which team and what people. We have tried to do this in project but it is only designed for a single project and does not meet these needs. What would be great is a overview function in Planner that you can use to manage the Planners you have amongst multiple planners and having an association function to show which work connects to each other.