The thing is, none of the things you mention require proof-of-work, which is really the only thing that makes a Blockchain a Blockchain, rather than just a weir

The thing is, none of the things you mention require proof-of-work, which is really the only thing that makes a Blockchain a Blockchain, rather than just a weird append-only database which allocates tokens to accounts (scripts). Only by proof-of-work do these tokens become meaningful, because it allows the tokens to be moved around by the account-holders without a central party. There is simply no need for a private consortium to waste energy on proof-of-work. The features you mention can be implemented without any need for proof-of-work. The purpose of the organized waste that is proof-of-work is to achieve trustlessness, simply by requiring a huge expansion of energy if you wish to rewrite history. In Bitcoin, the maintainers of the database (the miners) are separate from the users, and proof-of-work prevents the Blockchain/database maintainers (miners) from rewriting history. But if the owners and users of the database exist within the same organization, it would be trivial to verify that nothing has been rewritten simply by every party keeping a copy.