I feel that it would be valuable to be able to burn a NFT or cNFT. But since the data in the hash function can change, I guess theres no point.
Maybe a good way to do this is to make a "vault" they can get moved into and never be retrieved.
Background info here :https://medium.com/mokens/what-can-i-make-a-moken-for-c7c4b12ea504