add a possibility to indicate the progress of a tast, e.g. 0,25,50,75,100%

Add ability to make new "Due Again" x number of days (weeks) after current To-Do is completed.

For example, you make a reminder to trim your dogs nails every two weeks. When due, you're out of town and don't complete the to-do till the following weekend.

When the current late to-do is marked complete, it would be nice to have a new to-do scheduled for the same interval.

Add task from browser with support for both choosing list on each adding or/and set a standard list where entry is added by default. It would be a nice feature to show standard adding-list, and last “used” list in top position and then all lists available beneath.

In Omnifocus, I can set a "start date", which is the date that the task is available to be worked on. We can choose the view (for example "all future tasks", "all visible or available tasks"). With this feature it is possible to better organize the future due dates and tasks, hiding the tasks of a far future. It would be welcome in MS ToDo.

Ability to sync with Outlook categories and sort by categories within the app.

Import from google keep, 24me, Evernote, ticktick, reminds..

Having the ability to set a due date or reminder for an individual subtask.

Everyone on a shared list should be able to get notified when entries are added or completed on these shared lists via push notifications on phone. Not via email.

Rather than having option to hide/show them in menu create a switch on top of list to quickly toggle between the two views.

This is a must given that this is a Microsoft product

Specifically shopping list, but also add reminders

Ability to backup/export all lists. Either to CSV/PDF/Excel and/or a backup file so that we can restore in the event of something going wrong with my lists or the Exchange server that hosts the lists. We need some level of assurance that our precious lists are safe!

Accidently have check off some task due to its location. An undo botton would resolve accidently check off task.

The input tag list is displayed and I need to select the existing tag and input it when I enter a todo.
Also, when searching, it would be nice to have a function to search by various combinations of tags and text.

So we can drag and drop tasks to other lists like Trello

I would love if I could color code the parts of my list so I can easily look at the parts of the list categorically at a glance! I absolutely love Microsoft To Do!

I would like ifttt support or similar. I would like to be use this to input tasks using Siri

Thanks for the Flagged mail connection. It would be great if the email could open in Outlook Desktop instead of OWA.