I'm really not comfortable with Calypso until it can be detached from Jetpack. The beauty of Wordpress lies in the fact that it runs standalone. The dependency that Calypso creates, on Jetpack and wordpress.com, a for-profit entity, does not enthuse me, in the least.

The join between the two looks completely arbitrary to me - it exists only to make users of Wordpress, into wordpress.com users. The first is free and open source, the latter a commercial entity.

If your connection with wordpress.com goes t*ts up, or your account there gets hosed, or your account there gets compromised, Calypso management of your site(s) will cease to work. Sure, you can fall back on the 'old way' of doing things via wp-admin, but it appears that the long-game here is to make this a second-class citizen.

Surely you should be able to join your sites to an admin server that you run, without needing an account on a 3rd party service. Doesn't seem to be any sort of priority tho.