Be sure to include some way for the spare Modular Cutter modules to be swapped. With 4 modules, 2 in the Cutters and 2 in the Cruiser, there's no "swap space" in the Cruiser Hull, so presumably, there has to be some manipulation arms on the Cruiser to do the swapping; one to hold the Cutter, one to pull the module out of the Cutter and put it in storage once there is space, and one to pull the module out of the Cruiser to put it in the Cutter.