Pay-Per-Usage Scalable SQL Service
The current pricing schemes allows for either pay-per-usage Datastore or BigQuery, or pay-per-machine fully transactional relational Database. What I would want is a scalable pay-per-usage service for SQL, where I dont have to pre-provision servers, but just have a fast and reliable SQL service where I get billed per used CPU cycles / RAM / Network / Storage at the end of the month. Currently, our SQL servers idle outside of standard business hours, and we have to over-provision for some rare complex queries.
As you are anyway starting to make Cloud Spanner SQL compatible and have full control over development, maybe that could be upgraded into this kind of service model?