BTW, I looked at
Shiratsuyu to remove the X turret and replace it with AA, and the devs had already done it
Adding DC throwers to her will require a dat change.
I might actually do that next. Very simple dat changes since that's not my area of expertise. I can simply move the sailors on deck and rotate them so that they can be replaced with K guns or Y guns later in the war.
Having the jap DDs throw a DC pattern markedly increases their effectiveness as ASW assets, particularly in deep water. Once S3D allows someone as clueless as I am to mod the dat files and add nodes, we'll see what they are like with the historical 4 DC throwers. I need to make sure at that point it's 4 in addition to their roll racks, or if 2 roll racks get replaced.
Fun stuff.