Integrate OneNote in/and Planner
1) It'd be great if OneNote notebooks/tabs/pages could be linked to planner tasks and/or buckets - that way you'd incorporate a reporting feature into Planner, which desperately lacks it
2) Even better, if OneNote tasks were bi-directional or fully integrated into Planner and also Outlook, that'd be a win.
3) Follow a "single piece of information stored in a single place" concept and enable cross-linking througout your other apps where appropriate.
As many users here said, there are many tools available, but there is a lack of a connection between them. Teams is a good tool, however ultimately needs to connect all the other together.
Keep up the good work ;-)