I just found this gem - Discouraged Block. It proposes a method where miners "will" (are requested to?) ignore chains with certain blocks at the tip.
It's not like anyone can dictate the behavior of all miners, but if large parts of the network choose this discouragement strategy, then it becomes unprofitable for any single miner not to join in.
Are any current miners/pools for or against this discouragement policy (currently, the only policy is "ignore forks where the coinbase of the block at the tip does not contain the block height")?