I have two requests:
1. Allow the Windows app to float individual lists on the desktop (like Sticky Notes does). Having them there on the desktop serves to motivate me to get things done. One good example of what I am referring to is the Google Desktop To-Do list widget or this (http://www.omgubuntu.co.uk/2009/09/run-google-tasks-on-your-desktop-with-google-chrome-or-mozilla-prism).
2. Publish the API so that developers can extend the experience.