Not sure DL will give you much more, but if you send in a complaint they might. as for those who think you're owed nothing and wont get anything, head over to the UA thread about compensation and you'll see mech delays do get you some extra miles (i got 30k on a recent flight).

I was scheduled to be on the DCA-DTW flight with you, small world! I realized after they had us deplane that i wouldn't make my connection to DTW-PDX and would be stuck overnight there with no good morning options to PDX. So i went to the lounge and firmly asked them to put me on UA's IAD-PDX nonstop and they pulled my bag from the plane and sent me Dulles for that flight. I wound up trading my F seat for eplus, but i got home. My approach to misconnects (especially where they deplane me and give me time to plot alternatives) is to be very proactive about getting rerouted in advance, although this doesnt work for all airports.