I agree. Several of my usual destinations (and hubs where I tend to connect, I fly DL most of the time) don't have a Centurion club, but I do use most of the benefits listed on the post I just quoted. For example, I visit SJC at least 8-10 times a year, and the only lounge there is a PP lounge. I connect at ATL/DTW/MSP, all of which have decent Skyclubs but no Centurions.