I tried to book a RTW in business class with DL yesterday. I had used the ST site, such as it is. I had confirmed that all the space on all flights was available. I thought it would be simple. After one hour fifty-two minutes (I monitored) I was told availability was lacking on several flights. So, I did the time-honored DL trick, thanked the agent, hung up, recalculated to get another ST code and tried again. This time the wait was longer, 2 hours 3 minutes, but the agent was more professional. All was well. Then she told me that on the US flights DL will put you in economy, never mind it is RTW business. For an extra $100 you can upgrade yourself. never mind that I am Diamond, RTW tickets are not upgradable. I then went back to OW and *A, the ones I usually use for RTW, and have good solutions for both, and OW books and pays online on the OW site, so no nonsense. That is it for me. I already was disgusted with program changes. Now I have given away one award ticket and I have just offered others to Kiva. I shall now part ways with DL.