It would be useful, eg for Management Reporting to be able to provide someone with Read Only access across all Plan's you are in/own

The ability to add multiple checklist to a Planner Card significantly increases the flexibility of use cases for Planner Cards. Additionally, adding the ability to add due dates to each item on a checklist enhances the ability to manage the activity documented in the Card.

Start day on Monday. I cannot see where to change this option

I may have several tasks across many buckets that are due around the same time. It would be good to be able to highlight high priority tasks and then have a view of those tasks so that I am sure I am working on the most important

Having an offline app will help with keeping the plans up to date when you are not online. For example: preparing and updating plans on a plain

We often have projects that follow the same structure. It would be useful to be able to copy existing plans (including their tasks) so that we could re-use the same list of tasks for a different project.

I want to be able to create Plans that correspond to existing SharePoint Team sites.

Therefore I do not want to create another similar named Group at the same time, this is just confusing for users, (and also I don't want them saving documents in this new Group instead of the Team Site.)

When we create a Private Channel in Teams, creating a Planner is not an option in the channel tab. This would be helpful: to allow this subgroup of people to work together on a confidential activity within a team.

The short-cuts on the left side of the user interface is useful for jumping between different plans. However, it only shows two letters for each group e.g. CB for consumer b2b.
It would be great if a plan/group could have an icon instead to make it recognizable.

If guest user adds task to my plan and I ask additional questions in comments - the guest user will need to reply somehow. I can't understand why guest comments are blocked.

I want an option to disable notifications for comments.

I do not want to email the entire Office365 Group every time I add a comment. You can't disable this.

Furthermore, if I did want an email to go out, it should be identified as coming from Planner rather than an email from me.

Showing completed tasks at the bottom of each bucket isn't very helpful when the list of completed tasks is enormous. If Search functionality for Tasks can be added and cards can be archived, that cleans up the buckets and keeps all of the pertinent information at the forefront. If I want to look for a completed task, searching by text makes the most sense to me rather than digging through a list of completed tasks until I find the right one in one of several possible buckets.

Allow Group Admin to set permissions for members of the plan -
E.g. Who can add/delete/assign tasks.

For all comments, email notifications need to be sent to all assigned to that task. That is the main use of Planner. If team members have completed their task; they can remove themselves from the assigned list, to stop the unwanted emails.

I have different plans for different people on my team, Sometimes tasks need to be moved to someone else. it would be nice to be able to drag a card from the board on one plan and drop it on an entirely different plan in the left-hand column.

Provide an option for a printable version of MS Planner, ether of the planner hub of a particular task. Also, a printable report. Most administrators want a to see a physical report of progress. If there is a way to print plans, tasks, and charts to present to administrators.

It would be nice to be able to create custom status’s for your board.

We use additional status’s for when we are working on a task. For example something may be in progress but we would set the status to Waiting on Customer or Pending Testing.

It would be great to create our own status’s that can be applied to the Plan for better tracking.

It would be great if .md (Markdown) notation, like in https://msdn.microsoft.com/Library/vs/alm/overview/reference/markdown-guidance, would be supported for text description fields for tasks, plans, buckets and other objects

Outlook tasks are outdated and have tons of limitations. REPLACE Tasks with Planner. Include Planner as part of all O365 plans offering Exchange Online. People who use Outlook with Exchange Online should get the Planner Version of Tasks. This to my mind would kill all competition in the mail client + task management areas across all devices.

When I am adding checklist or comments on Planner Tasks then I want to be able to mention a specific employee who the task, or item in checklist is assigned. This way I want the person to be notified.