I hate the word integration. I hate Google for it. That's why I never got on the Apple bang wagon. But if Google wants to be like Apple, then I'll find another OS. But so far I have managed to keep Google at bay on my phone.
I like customization, personalization, control over what features I want and lack of Big brother oversight and specially being told I must use this feature or else... Which Google does from time to time. Apple is the Mega Evil Empire and Google is getting there but on a much slower pace.
As I agree with many of your points I feel that you are going to be very disappointed in the near future. Please don't take this as arguing with your or something of that nature, just attempting to make a point based on past trends.
Smartphones are no long just a phone with an OS, its becoming more of an Ecosystem. Apple has iCloud/iTunes, Google has... well... Google. It isn't going to change and at the rate they are going its only going to get more integrated. While the integration will get more and more in depth and widespread, I do believe that Android will be the one OS that will give users the option to disable or turn off certain services. The world is going in a direction that seems to be more technologically intertwined with our real lives. People seem not to be able to survive without Facebook or Twitter or Google+. Simply because of the popularity of these things, we are going to see this only grow.
Personally I never used G+ up until 6 months or so ago and now I use it almost more than Facebook/Twitter. Sadly, Google has to keep up with Apple in certain areas simple because Apple can control so much in the smartphone world. Not so much technology, apps or smartphone designs but more so trends. Google isn't immune to this, they want to keep up with the market and appeal to everyone. That is why they have integration features like G+ and Picasa but at the same time allows you to disable all of these features if you don't want them. That is what makes Android great and in my personal opinion the best mobile OS out there.