Then love it and wait for improvements. ;-) I think they will implement something on top of MySQL. And every-time you can ask startup for different pricing model am pretty sure they will be very flexible with it.
Our platform is a fully automated system with high availability & zero maintenance required. So you don't have to setup a RDS box + front end server for the api + load balancer + .... maintain / update all that stack.
And YES, we are very flexible and open to suggestions related to our pricing This is also why we posted here, to get valuable suggestions and comments :)