Although I happy to fight against spammers at all cost, this proposal sounds like a bad idea. UTXO bloat is THE number 1 issue surrounding spam precisely because small amounts of bitcoin are burned into the chain never to be spent again. All sorts of gobledeygook shows up in the witness data and the intention is for garbage data to be baked in there bloating the set.

This proposal forces it to stay burned which is the opposite direction we need to go. We need those UTXOs combined and making the set lighter.

I understand the argument is to punish spammers such that they stop and the net effect will be a reduction in overall spam, but this proposal guarantees that those UTXOs will never be combined.