SAS's biggest mistake was to be the launch customer for this type of aircraft. They should have waited until all the bugs had been sorted out before placing orders. Bombardier is not Boeing, (which held SAS's hands throughout the 737 phase-in). SAS did not have the know-how, nor the support to deal with a brand new Q400. It was a stupid mistake on SAS's part to be a launch customer where support is 5 or 6 time zones away. Hopefully a North American carrier can pick these machines up. A few belly landings isnt enough to scare the general public here from getting rid of them...
I wish SAS all the best of luck though. They certainly need it.