Squirrel,
Design is the responsibility of the contractor not MoD, they have to deliver a capability not a specific aeroplane type. If it is cheaper to take a non boom equipped KC-45 clone off the Mobile production line and use that to provide the basis for the 14 a/c fleet then I cannot see how that would cost the MoD anything additional.
As to the core fleet of 9 with 5 out on long term lease, I have yet to come across any airline who thinks that is a practical proposition, for them OR for the consortium. If the present circumstances do not comprise of surge conditions requiring the utilisaton of the entire fleet then I find it hard to concieve of just what would.
Gainshare? There has to BE a profit to your bottom line first beflore you can even consider sharing it with the customer.
Anyone like to place a bet on just how much 'gainshare' the MoD ever sees out of this partucular deal?