Hope -
From the look of the ATC Ground Delay Program, even with reduced visibility, we should still operate pretty well today. With average delays of only 17 minutes, it doesn't sound like it will have a major impact. With connections and flights being more spread out, it should reduce the number of customers that misconnect.
Now if we were still in a banking hub, then the delays would have been much greater, IMO. When you are talking about Ground Delay Programs, it always will depend on what the Airport Arrival Rate is. In this case, the Arrival Rate is showing 44 (arrivals per hour) which is pretty good. Delays will get worse if the ARR drops. The lower the rate, the higher the delays. Perhaps the more even distribution of flights will help to maintain a higher arrival rate versus trying to cram flights into banks.