These operators can be smart contracts, which means you build an entire application on top of an Item Collection, or design a Collection in such a way that it becomes an important architectural wing of one. For example, you could have creation / minting permissions governed by a subDAO that is ruled by a governance token. Then you could have the metadata modification permission governed by a different subDAO altogether. Overall, this would set you up with a decentralized, multi-token, multi-layer governance system for your Collection; this could be incorporated into an NFT art DAO, or a blockchain game...