Last fall, when I wrote this
Your new phone will have less Google bloatware, and that's awesome | Android Central I had gotten a peek at the new (and confidential) Google 'Mobile Application Distribution Agreement' that partners need to follow if they want to use Google Play.
There's nothing left in it that isn't absolutely required in order to use Google Play and be compatible with all the current APIs.
You can make a list of all the Google things you think are unnecessary bloat, and if any item on your list is still in the agreement, you are wrong.
Because Google has to work around crappy OEM's who only update the expensive phones they sell (cough SAMSUNG) they bundle as much functionality as they can into their own apps. That means they require those apps to be installed so the Play Store — and all the apps in it that are targeted for your specific platform — work. I'll bet most folks have no idea that Google Maps is required on your phone if you want to install a third-party SMS app from Google Play, but it is.
They've also removed as much from some apps as they can — like Google Newsstand or Google+ — and baked it into Play Services. Subsequently, those apps (and several others) are no longer required. I'm sure Google is working on breaking out even more functions, because they also want things to be less monolithic and have EVERYTHING able to be updated individually from the Play Store, because they know Samsung will never send an update for a $120 phone sold in India or Brazil. The same goes for LG, or any of the other thousands of Android OEM's you've never heard of.
I hope the EU lawsuit forces Google to remove all their apps from the agreement for phones sold in the EU, so we can have fun seeing the rush to download them (and the obligatory complaints and nerdrage) in order to make other apps work.