Yupp, certainly don't disagree. It's not a perfect system - to comment on those two issues: there were some pipe dreams when I was there to support schemas, inc

Yupp, certainly don't disagree. It's not a perfect system - to comment on those two issues: there were some pipe dreams when I was there to support schemas, including partial schemas, but we needed a better migration story (and someone to convince the powers that be it was the right thing to work on). The limitations on keys are mostly due to the system being compatible with Cloud Datastore.