Once we decentralize mining, nodes can have a feature to slow down the propagation of the bad blocks on purpose.
It would give nodes more power to decide what goes on to the blockchain by allowing bad blocks to become stale.
And it's not a consensus change that would cause a chain split. It's just you are weighting TXs that doesn't fit into your policy more in terms of bandwidth, so slowing down its propagation. nostr:nevent1qqsrq625dk7lckj7lgjtjkusymu5sa6ntujte040xjkaznj5a47t8nqlqxlw4