You enter in your outlook mail calendar and you can see all the tasks assigned to all the days according to the deadlines.

Please build a desktop app for Mac OS

It'd be awesome if you could tag another member of the planner the way you can on Facebook/Twitter/etc in comments of tasks so that they can see it.

Would be good to have separate (optional) deadlines for each checklist item in the card.

I frequently get logged out when working with Planner after some time of inactivity - this is different from the rest of the Office365 suite. While having to login again is not only annoying, I have also lost content because of this. On more than one instance I was still able to create tasks, only to find them gone after having to login again.

The ability to link between tasks is important.
For example, Management created a task. This will be converted to sub tasks on a sub team Plan.

As stated before me. The labels are too small when applied. The user should be able to add or reduce the amount of labels and the user should have the ability to change the colors of the labels.

being able to duplicate or template tasks, cards or buckets would enable input of a workflow once and then when it reoccurs capturing on the plan would be quicker and easier. Reducing repetitive input.

-Allow users to have the option to set desktop notifications when there are comments to a task rather than an email that is sent.
-Allow users to have the option to set desktop notifications when due dates approach or item is due.

Hub view has all plans with their statistics on one page which is not the best layer of information. It would be nice to have a "Master Plan" where you can have other plans as "objects"/tasks to track their state and move them to different buckets for multi project management.

Currently, there's no way for end-users to obtain an overview of all public plans, as -contrary to what the name implies- the "All Plans" section is in fact the "All MY Plans" section.

If you know the name, you can find the related Group, but there's no way to go from the Group to the Plan.

Allow users to select which team members receive notifications for a task comment

Please create a feature that allow the user to setup a reminder for a specific date and time (like outlook desktop tasks).

The current 1,000 character limit for tasks description is far too small. This should be increased massively or be unlimited.

App for iOS or some other mobile access

TASK Delete - It should not be possible for anyone to delete a task. Task deletion should be restricted to the creator of the task or administrator of the plan. This has cost us a lot of time and effort and effectively renders what is an excellent system useless for managing task orientated projects with big groups of users because we have no clue who deleted a task or why or when.

Typing a URL in a comment does not render the URL as a hyperlink when the comment is saved. It would be much more user-friendly to render these as hyperlinks.

By pasting Cnrl + V should automatically upload the screenshot as a file to a dedicated folder whithin the Office group and link it to the task within Planner

It would be wise to add undelete somewhere as we just lost an entire plan somehow.