Now flying mostly UA. Flew 150k BIS on NWA for 20 years in a row as a happy and very loyal customer before that. PM (PE) got me upgrades to F on nearly every domestic flight. Was happy just to get the extra miles for going over the 75k for PE status since I could almost always use these for upgrades to C in TPAC. Once NWA made it nearly impossible to get UGs on TPAC, it all became irrelevant.

There are different types of flyers, and different aspects of the programs appeal to different types of flyers, but IMHO DL has a crappy hard product on TPAC and there is nothing in their FF program that is appealing to TPAC FFs be they full fare biz pax or discount economy pax.

It's a shame. NW used to have by far and away the best hard product and the best FF program across the lake, but DL is totally out of the running these days, and DM and rollovers have done zip to make them better.