Sorry, I don't quite understand what you're asking. In the future each DO will have a private SQLite database. The key/value store will actually be redirected

Sorry, I don't quite understand what you're asking. In the future each DO will have a private SQLite database. The key/value store will actually be redirected to store into a special table in this database, but probably new apps will just use the database and not the KV store. Separately from that, I would like to develop tools that make sharding Durable Objects (and D1 databases) easier. Today it's a pain to do manually. This is independent from the underlying storage model, though.