I would love to go through all the tasks of a given period (overdue + next week/next month) so that each task is shown individually on the screen, and there are preset buttons for rescheduling ("Today", "Tomorrow", +2 days, +5 days, 1 week etc...).

It would make planning a lot easier and easier to make changes to existing dates. It is quite annoying that the current postpone is only a specific set delay.

Alternatively "postpone" could open up a calendar / or option view for flexible postponing with one or two clicks.