Problem: My prefered view is viewing all tasks for the next 7 days. At the moment I can't see subtasks earlier than the maintask. This finally results in missing the more important subtask, because I can't see them.

Solution: If the maintask is ending on another day than the subtask, show both tasks on the approriate date. If a subtask ends earlier in time, but on the same date, as the maintask, then show the time of the earliest ending subtask in the maintask overview, instead of the useless due time of the maintask.

This allows me to see all important due tasks at a glance, what I'm really really missing at the moment.