Very nice idea and execution, though I haven't yet understood why you'd want to spend module/plug space on modules that move your weapons when you could just stack ones that passive benefits or healing. I won by stacking good effects on a longsword, but maybe in the full game I'd have to be more clever with them
I second whoever said that healing is OP
I'd suggest muting/lowering volume of activating effects (I think it was the capacitor) while you're in the shop