I am probably not one of Delta's favorite customers, but I will be pissed if they are giving some DM for $25K Amex spend. I'll finish up with just over 100K MQM but easily could have reached 125K as I combined a number of TATL trips as there was no way I'd make the MQD for DM (or the $250K waiver)
I will miss the GUCs -- especially with the non-stop LAX-AMS flight (though I have a feeling that may not last long given how empty the flights seem to be). I've never had an issue with them not clearing on TATL flights (though my Dec LAX-AMS hasn't cleared yet). It is a little thing, but I think I will also miss boarding with PREM (as I can get settled without blocking the aisle). I don't know what I'll take as my PM benefit -- it has always been RUCs but I rarely use them all (will have one expire in early Jan).
Way back when I was planning on holding short of DM when it was first introduced (no GUCs then, though) so I guess it will be a reversion to the status quo for me