The internet and state government pimps have been the two worst things to happen to any state that has a special resource. Iowa - deer, Kansas - deer, South Dakota - pheasants, North Dakota - waterfowl, etc.
South Dakota is pimping out the pheasant to the entire nation's upland game hunters. You are taking these hunters and putting them in a box from I90 north to Hwy12 and I29 west to the River. It's too many people in too small an area. The extended season issue is not that the hunters are going to shoot too many. The issue is that they are driving birds out of the only suitable winter cover. The hunting will be later in the day when it is the "warmest" for the hunters. Will the hens make it back to suitable cover for the night? Who knows. I think it will hurt some birds being driven from the thermal cover when they are vulnerable. The earlier start time will not be much of an issue but the later season could hurt the hens we depend on.
We all are using the internet to read and write to each other but it has been the worst invention ever in a lot of ways as it relates to hunting. The hurdle for non-residents to enjoy all of these states' resources should be much higher. My 2 cents.