I just stumbled on Webiny, and I very much like what I have seen so far.
The only thing, that I don’t like is the dependency on MongoDB, because we don’t use it, and I don’t really want to add it to our technology stack.
We are running PostgreSQL, and are considering YugaByteDB, a distributed database, that has Cassandra like and SQL interfaces. I already found out about Commodo (https://github.com/webiny/commodo), your storage abstraction layer. Would you consider accepting contributions for different databases, e.g. PostgreSQL or YugaByteDB?