The exchange price will probably be good for masternode owners, but unlikely to be good for miners.
For every 20 coins a miner is able to sell, a masternode owner can sell 80.
Miner also has higher hardware costs.
If coin was $2 masternode owners would be, "Awesome, $160 i'll take that. Miners would be "$40? how do i make money from that?"
This is compounded by the fact it will take a miner 5 times longer to afford a masternode.
Existing masternode owners can compound their returns 5 times faster so they will have more and more coins.
Any miners with a decent rig able to tell us how many coins they are getting in a day?