task-focused interface (like eclipse mylyn)

As an eclipse user I really miss the Mylyn functionality (quick demo http://www.youtube.com/watch?v=IEyjpDrHCjc)

In my mind a basic task-focused interface would cover:
1. task creation/import - I can define local tasks and there's an API for writing connectors that retrieve tasks from remote issue trackers
2. every task carries it's own persistent context (primarily which files are open) and when I activate a task the context is restored