[stcredzero]

There are a range of applications, including highly useful ones, that simply needs multi-tasking. Anything that is time based (think calendars, alarm clocks, etc...) really need multi-tasking to work correctly. A host of location aware applications really need multi-tasking to work effectively.

Very few apps need completely open ended multitasking. Most apps need very specific capabilities. An API for registering time limited functions with timing, location, and other services would take care of 90% of the needs out there.

[theBobMcCormick]

I think you've just made enjo's point for him. You said "Most apps need very specific capabilities. An API for registering time limited functions with timing, location, and other services would take care of 90% of the needs out there." That IS almost exactly the very well thought-out system that Android provides and that enjo was talking about.