Archiving notes so they can be viewed again rather than deleting them forever
I like to use notes to add additional information or status updates to a task such as "Emailed this person on such and such date, waiting on response", "Response received" etc ... and when a note becomes obsolete I delete it so I'm no longer distracted by outdated information but sometimes those notes have useful info, numbers, hyperlinks etc I'd like to retrieve or search for in future. It would be nice if notes could be archived the same way tasks are completed simply by pressing the space bar when highlighted and if Hide Completed is selected then they disappear but I can make them visible again or search on them.
May be, you should use subtasks for things which could be completed and notes for additional information?
Just a thought :)