In reply to Tom Hickey.

I don't think so -- some things really make sense to be on for as many people as possible. That's the promise of Jetpack, why it's become one of the most popular plugins in the world in just a few short years: complete, integrated, hassle-free functionality, always the latest and greatest.

Some advanced users may not like that, and they can have plugins or filters to alter how JP works, but it's the right answer for the vast, vast majority of WordPresses in the world, the same way that new features in core are "on by default."