This is good to hear as I fly D1 from SEA once every year or two. Ironically I just switched a 2025 D1 itinerary to route through ATL as a result of a schedule change. Hopefully a D1 Lounge will soon be in each hub that offers the service. Not trying to sound entitled, but when one has paid nearly $10K each for a D1 ticket using the same crowded SC just somehow diminishes the experience.