And this is good for Bitcoin how?
It will eat Bitcoin like Fiat ate Gold, a PoS SC is a terrible idea, it will reward wealth not productivity.
I agree it will reward wealth not productivity but what happens when/if the greedy miners make transaction fees cost to much in a native land? You cut off third world countries possibly taking advantage of using Bitcoin - a POS SC coin would keep funds at a constant rate for transacting - this is really not that much different than what a Coinbase/Circle Company will be doing when we get a centralized wallet system that will charge users a small percentage to use and keep transactions of the blockchain.
Much like Coinbase Tips and ChangeTip is doing right now with the tipping features. Internal transfers.
I'm a greedy miner too. Miners have it easy for the next 6 years, there after if they charge high fees they devalue the network if the value of the network drops the status quo change if they don't adapt it degrades it will keep changing until the status quo brings new actors.
It's actually greed that will prevent degeneration, miners who scoop up the transaction fees that are equal to the marginal cost will out compete there competitors. At every halving there will be a disruption and miners will start a new competitive race to discover the marginal cost of business.
SC running on the Bitcoin protocol using SPV proofs change this incentive, this is why I'm skeptical.