Create key dates in schedule view (which are not cards)
It would be great to be able to mark key dates in the schedule view for upcoming events/milestones/gateways that are not tasks in themselves, but need displaying in the plan.
This is a little like the '0' days option for tasks in MS Project.
For example, we often need to show key meetings for approvals, board meetings etc. and organise other tasks around these. Without this feature we have to refer back and forth between Outlook and Planner to see where key dates are, or create a card as a placeholder for the date (but it remains incomplete and unassigned which is messy and not as intended).