AMD already did this. The RX6K series are terrible cards for mining. The radeon 7 smokes the new cards because the new ones where designed to be as bad at minin

AMD already did this. The RX6K series are terrible cards for mining. The radeon 7 smokes the new cards because the new ones where designed to be as bad at mining as possible without effecting raster performance. RX 5700 will hit 55mhs and the RX6K series will do ~68mhs, but the cost of the 5700 is typically like half that of a 6800. There's a reason it's easier to find the new AMD stuff in stock than nvidia stuff, they've got a terrible mining roi.