I saw back in 2020 someone posted this but it didn't get many upvotes.
Not sure how many teams us the 'Planner' in resourcing but i learned on a call recently that it will soon be phasing out / no longer be supported.
The biggest thing about the planner is that you can EXPORT the data. Removing the planner will only leave the Workload balancer, which currently has no ability to be exported.
Although i can do a task report, this area would be a great way for me to export weekly information easily and visually pleasing for certain teams. Would love to at least get the functionality of exporting into the Workload balancer if the Planner is going away.