Like everyone else, we definitely plan on making this work.
There are big changes coming, and soon, on how our auth tokens work. They’re going to be Macaroon-like and will enable fine-grained scoping and cross-org sharing of stuff. I don’t know when they’re going to hit, but they’re what I’m working on right now, and I’m impatient.
But what you’re asking for is SSO support. We know we need to get this done, and we know how to do it, but we’ve got a bunch of other things queued up ahead of it, and (so far as I know, and please correct me if you’re reading this and disagree) most of our current users don’t need it. It could be later in the year for us.
For what it’s worth: being in the middle of SOC2 right now, we’re 1000% sold on the value of farming auth out to Google for this. You can work on convincing us, but we’re already sold. 
This is essentially just a logistics thing for us.