[unboxed_type]

Interesting point, thanks for sharing. But, anyway:

What incentives do those mirroring nodes have to store regular data blobs and process requests from clients?

Who will decide the privilege to be such a 'mirroring node'. The origin can run several such 'mirroring nodes' and rewrite history on all (some of) them: how would you know who is giving you the truth in case of conflicting information?

I bet if you solve those questions, you will be simulating a blockchain system. Do you agree?