Agreed. Federation makes a lot of sense to me in many cases, especially those that relate to the enterprise use cases where performance over extreme theoretical

Agreed. Federation makes a lot of sense to me in many cases, especially those that relate to the enterprise use cases where performance over extreme theoretical security is much more critical. I think some newer consensus algorithms are experimenting with similar concepts as well. For instance, with delegated proof of stake, you can use your funds to elect a federation or a government (a list of nodes), which in turn will stake their funds and resources to validate blocks.