CDB is a really cool db for the time I've been playing with it (just a few months I think).
That said, I'd really appreciate if they'd launch a hosted DBaaS. By that I mean, more in line with dynamodb or documentdb instead of say MySQL on AWS for example.
I know it's on their timeline, but dbs generally get selected during the start of the projects and unless absolutely necessary, companies don't want to change dbs.