Been following this mod for awhile, it's looking great!
As you can probably guess by my name I'm a big fan of the Rising Sun mod, notably utilizing the Narwhal class and it's dual 6 inch guns.
Will you be able to command the Type 151 U-Boats and U 139's? I'm not sure if SH 4 supports having more than 2 deck guns, but taking on enemy escorts solely with 2x 8.8cm's and 150mm guns is something I could get used to