I agree that moving some of the US NOs to the Atlantic side of the board is a good idea to encourage US involvement there.
It seems to me that most on boards are in one of two camps.
Camp One – “The game is unbalanced towards the Allies if US goes all-in on the Pacific side and ignore the Atlantic side.” Obviously this camp would want incentives for the US not to ignore the Atlantic.
Camp Two – “If the US ignores Europe, Germany/Italy will win, therefore the US can’t ignore Europe.” Those in this camp already split the US income between the boards. Therefore they should not mind if some of the US NOs are tied to territories they are already fighting for on the Atlantic side.
So moving some of the NOs should at worst have little effect on game balance, and at best improve game balance.
Though I don’t think having the moved US NOs be based on London’s lack of capture is a good idea. If Germany does not go Sea Lion there would be no change in US income and the US could freely concentrate on the Pacific. I think the NOs are better shifted to the North Africa/Med/Mideast areas of the board. This area of the board can be contested by both sides and can go back and forth no matter what grand strategy is being employed, unlike an all-or-nothing Sea Lion gambit.
PS – I also think the Super Battleship idea is too complicated.
PPS – I also think the “abandoned ships” reference in regards to Pearl was tasteless.