Evernote has a feature where you can have a persistent notification (doesn't show in status bar) in the notification shade that can be clicked to take quick note without opening the application. It would be nice to have this functionality for RTM as I currently use the add task badge widget, but this would allow me to quickly add tasks from anywhere without having to go to the home screen.

https://discussion.evernote.com/topic/98709-add-quick-note-from-notification-bar-on-android-phone/