Support other services as a datastore for Tasks & Reminders (eg Google Calendar, Remember The Milk, and other products that support the iCalendar format (RFC2445)

I also use rainlendar - it would be good to go between products and have 2 way data entry and updates (at the moment I can already update tasks on my laptop and have them appear updated on my desktop within minutes) - no need to manually copy data - or perform a "synchronise function" at all.