Well, an update with the latest know-how will be more than enough. IMO.
The DC-shake mod and the Seabed repair +the LRT in one sound like a good idea!
Maybe variable repair times by utilizing SH3Comander
As for the Dive-planes...well the early NYGM version had them (the Screws, and the Torp-tubes too) connected to the Coning tower. It was a nice workaround but bugged the hell outta me since not all equipment should be accessible from outside only!
Lets see first where the new breakthrough will take us!