I don't know much about drivechain yet, but I don't like any idea of adopting blockchain - sidechain, drivechain, etc. - except for #Bitcoin.

Small blockers tended to see full validating nodes as important in regards to enforcing protocol rules, while to large blockers this was not the case at all.

(...)

#Bitcoin had all kinds of rules and conventions, not just the blocksize. For instance, transaction formats, signatures approving spending, a Merkle tree structure, a block header format etc, etc. Surely Brian and the large blockers were not arguing that anything with more computational power behind it, even just a chain of hashes without any other transaction-related data, would or could be defined as #Bitcoin?

- The Blocksize War Ch. 7 Bitcoin Classic

https://blog.bitmex.com/the-blocksize-war-chapter-7-bitcoin-classic/