It would be very handy if a subtask could be a (clickable) link to another task in Doit (with the same title as the linked task).

This would be useful for creating "batches" or "agendas" while keeping the linked tasks fully visible and editable as usual within the projects where they actually belong. For example:

- create a batch (agenda) of carefully selected errands (in different projects) to be done all at the same time when you go to a certain part of town
- create a batch (agenda) of different financial issues (in different projects) to be discussed with your accountant the next time you see him

This would be convenient in many ways:

- it would allow you to carefully deliberate and manually preselect the most appropriate tasks to include in this "event" a long time in advance
- it would allow you to schedule or star all of them in one single operation - just star or schedule the "event" task
- it would allow you to keep your Today list short and neat - only one task line for the "event" task itself
- it would allow you to still always see all the linked tasks individually in the project where they really belong, and to unlink them from the "event" task if necessary
- it might allow you (ideally) to have all the linked tasks completed in one single operation - just check-off the "event" task, and all linked tasks would automatically be checked off