I've always used Google Camera on GOS for this reason.

It's the one Google app I use. I believe I have it sandboxed effectively, although I'll admit that I'm not knowledgeable enough to really confirm that.

Installing Google Camera to be able to have a good camera was a compromise I was prepared to make, and three years later I'm still happy with that compromise, although it might or might not be one that others would accept on their own devices.

@sneak, was there anything other than the camera about GOS that you considered a shortcoming?