Hangouts destroyed the google talk experience and community. Someone should have gotten fired over it. Everyone seemed to use google talk before the plus/hangouts conversion. Such a massive lost opportunity.
There are many other examples of half-baked and unmaintained software from G. For example, play music's web UI has many irritating bugs that never get fixed. I'm close to canceling my subscription.
I'd be pretty hesitant about committing all in to any of Google's enterprise offerings, like GCE, based on my experience with their other products.