Please give users the ability to create recurring tasks. Uses:
Checklist of things to do each day
Weekly todos
Monthly todos
... and many variations of the above, though these would be a great starting point.
Without this ability, I'm forced to do things in a very inefficient way, e.g., create a daily checklist, then uncheck everything at the beginning of each day to start over. Unnecessary waste of time & very clunky!