[sgk284]

Re: specifying data - In my experience, you always want to overfetch anyway if you want your offline experience to be any level of reasonable.

It's pretty lame when you're offline, see an item in a list, click on the item, and then the new view has no additional information that wasn't already in the list.

That said, I've built a fairly sizable GraphQL API at my startup (https://banter.fm) and am pretty happy with it, though not 100% convinced I'd use it again.