That's a very interesting way to handle a decentralized processus on the Steem blockchain! I'm currently working on this POC that would go along very well with Steem Monsters. This is basically a distributed permissioned database driven by smart contracts. These smart contracts are deployed and triggered by the Steem blockchain via the post mechanic hence anyone that has a Steem account can interact with this database (also everyone can host this database as the orchestrator is the Steem blockchain).

I can most definetely imagine projects like Steem Monsters being hosted on this sidechain!