With the promotion of the Rapid board as the one and only board in GH 6 we are really missing the planning board functionality (or will be when it is fully deprecated).
For our maintenence tasks we don't use sprints, and the old planning board was a great place to plan releases in advance and manually tag issues to each release. We used this along with a Kanban rapid board to manage issue flow. This functionality is basically impossible to manage in a proper way using only rapid boards. The large amount of systems we maintain with indivudual component releases would flood the system with boards if we would use a rapid board for each release and use it's release functionality.
So my question is if there is any plan to migrate this planning functionality to the Kanban rapid board in the future? I could see it, or a similar function, as the "plan" part of the Kanban rapid board which currently has no fuction.