If I understand well, GWX team will make one new big game with both theatres (Atlantic and Pacific) in that case I will be very interesting fot that.
But, me personally much like the history about U-boats and Atlantic. Wolfpacks attacks on convoys, then the name "Grey Wolves" come to play, because wolves like sheeps (ships)
. Americans and their actions on Pacific is not too much interested to me, but having both options will be a very good thing of choice.