Earlier quoted context omitted.
Unfortunately, bare-bones Android may get barer and more awkward over time, if they migrate more services from the core OS into "Google Play Services". As an example, the new geofencing APIs that they announced at the last Google I/O (intended to replace the buggy core "proximity alerts") are part of "Google Play Services", not the core OS --- and therefore not available on devices which aren't part of the Play borg.…
Meh. Don't know how much this really sucks the usability out of things. On my Android, I confess I'm already so bought in to the Amazon ecosystem that I almost resent the room that Play and the likes are taking up. Is particularly obnoxious when the phone complains that I need to make room, and the only crap I can't move to an SD card is the Google stuff.
So your 8GB phone will only have 2GB that can hold apps. It's awful.
(Apparently this depends on the phone and OS version to a degree. It's true on GT-i9100s running Android 4.0 at least, and true on all 2.x OSes)