Hispeedtape,
I dont know how much you are aware about the AIH & SSV setup, but I struggle to understand your "lets keep our lads & lasses flying our aircraft"?
The size of the AIH fleet enables them to maintain full utilisation all year round. Any excess demand is sub-chartered to others and also with an agreement with Skyservice to take their 320's. The sum total of this means that Airtours dont have to lay off people and aircraft during the winter.
If they put 2 of their own 320's at NCL, then another UK base will lose out, because the Skyservice aircraft have to go somewhere!
The SSV A330-300 will be doing NCL-MAN-SFB-NCL over the winter, using AIH pilots & cabin crew, all of whom are MAN based.
I'm sure NCL will pick up in time.