Originally Posted by
xliioper
It seems a bit pointless just to add a separate tie-breaker just for the small handful of domestic PS flights.
It's a small handful now, but DL has expansion plans for domestic PS. This is DL's future plan to make you buy PS in order to get complimentary F, laid out in black-and-white. Some have argued that they're doing the same thing in the meantime with C+, and I don't have an opinion on that because my opinion counts for nothing.