Hey, as an idea, can you make half-sized armor pieces? That is to say, ones that are half-square rectangles?
As well, as an idea, since you've made smaller storages for Energy, could you possibly make Warehouse storages for batteries and ammo? 3x4 rooms that store massive, multilayer sets of energy, but are proportionally more vulnerable for being so large. They'd mainly be wanted for Capital Ship storage areas.