Doesn't actually need the miner's consent, only needs the market to agree. Problem is there isn't really any entity with sufficient authority for the market to

Doesn't actually need the miner's consent, only needs the market to agree. Problem is there isn't really any entity with sufficient authority for the market to follow, so it will tent to bias towards the status quo, and miners tend to have a lot of money and so influence in the market (both hard and soft).