I flat out won't pay for D1 until service is restored. It's not worth the ridiculous premium. I used a RUC for the ATL-LAX A350 suite, but I was on a main cabin ticket and just wanted the better seat. DL wanted over $1k for that seat marketed as F. I normally fly the DCA-LAX-DCA D1 route a couple of times a year, but I won't pay for that flight either up front.
We also need to continue to put pressure on Delta to restore service, but honestly I see all of the "vacationers" who are paying for the seats up front right now and I don't think DL cares what business travelers think. I think they just want to get through this summer and then reevaluate.