TL;DR
A coin that is POS but has daily returns of someone running a ASIC or GPU farm.
Well the high returns would likely adjust the cost to that of staking. So the actual return would be more like any other stake coin as its inexpensive to make. Some coins have value simply because a miner wont part with it for less than the cost of power and hardware. I would assume staking would be no different.
The whole Eco-system has changed in terms of profitability vs mining. Most rigs and machines struggle for roi which has resulted in a total shift of crypto economics