I prefer a blockchain of moderate size because it can ensure applicability and security.
I guess Op is referring to block size limit rather than a whole Blockchain.
I think a proper size should depend on participants producing their own Blocks, which would work great on multi-chain Network with custom Blockchains.
I corrected the typo. There's a blockchain that's custom-sized, that's Lamden. Read through this document to better understand how they work.
https://blog.lamden.io/high-performance-and-scalability-on-a-python-blockchain-47c0200c3ef6
Mina said that each block is always 22KB so how will the transactions being translated add data. Bitcoin per block is 1MB and it's still congested.