For the most, I agree with you - the experience on SAS Business does not match the price tag (in particular if you pay list price). Shorthaul advantages seems to be anything but related to the experience onboard (ticket flexibility, extra luggage, fast-track and lounge access).
Regarding long-haul, they seem to be very aware that their hard product does not live up to industry standards. A few days ago, their COO (Flemming Jensen) was quoted in Danish newspaper, that he can hardly wait for the current aircraft to be refurbished (early 2015) and new aircraft to be delivered.
A few days ago I flew SFO-CPH in Business and it sounds like I was served the very same menu. Which by the way was printed and handed out prior to take-off (including a description of all wines and cocktails on offer). I agree with your observations regarding the IFE (screen size, quality and the $5 headset). I got the impression that quite a few travel with their BOSE headsets (that can be used with a two-pin adapter) but I was stuck with my iPad in order to get decent entertainment. The devil is in the detail - lousy headset, plastic salad bowls, personal items becoming stuck in the seat due to lack of storage space and inadequate personal space (I'm 6'1/185 and did not fit comfortably in the angled flat position) can deflate the experience. However, I had a very pleasent crew, the beef ribs were tender and flavourful and I did find salt and pepper wrapped with the cutlery
Regarding your description of "my" airport - I disagree.
It is true that being forced through a shopping centre may provoke some travellers, but I find the size/layout of the airport simple to operate in and the diversity of the stores and restaurants make most other airports look like a sorry operation. I had a connection in IAD on my outbound flight and the gate area (United) felt like a bus terminal (no windows and harsh light) - you don't see that in Copenhagen. The walk from A22 to the SAS lounge is perhaps one of the worst combinations in the airport but it is a 10 minute walk - I can not walk a mile that fast