the problem is not with the individual crew, but with an aviation system that distracts and pressures the crew to hurry and make bad decisions.
Since first hearing about the "leak" in CVR :
"Slats, Flaps OK" at that time
and nowaday : "Slats, Flaps set"
I saw poor phraseology, or poor check list, or poor training ...
Mangement policy, not "aviation system" is in cause. Because the aviation system as produced at least the best training and the best sop's available as a result of 60 years of worlwide shared experience.
Better practice : tell the numbers .. say e.g. : "Flaps set 15"
and point to the flaps indicator.
CRM basics : the person reading the check list crosschecks as far as possible the response given by the other crew member. Looking at the flaps indicator as well, and to any slats indicator or warning light.
Modern sim recurrent training : put pressure and distractions on the pilots and see if something is to be learned, if the procedures are as fail safe as practicable. Had the captain be properly trained, "Sat & Flaps set" type answer would be out of question.
More CRM basics : teach the young co-pilot to watch and to correct captain mistakes. Suffice to brief the captain conficentialy to make a few mistakes during a sim cession ...
Captain training basics - technical : learn the consequences of any breaker poping out, of any breaker being left out. Know the criticalities, think about multiple failures ...
My own sop : check controls, set and check configuration at the very beginning of taxi, when not yet in a hurry, when not yet distracted ...
And so on ...
From the little information we have at hand, modern training was not really "top quality" within Spannair.
And that is a management error.
Don't put too much confidence in "SAS" quality label ... More often than not, subsidiaries are set up so as not to inherit mother company costly philosophy ... We have seen that in Belgium with the couple "Sabena - Sobelair". Sabena was very conservative, Sobelair was less. A few of their captains ended up before courts for cheating with recorded flight times, and that was a rewarded practice within Sobelair ...