Everything on my bike is powered by M&Ms and I like it that wayYou know, a universal battery could be a cool idea. The reality is we are moving toward more battery and electronic innovation on our bikes, even if they aren't e-bikes. Having a compartment that fits a battery that can control your lights, head unit, dropper, derailleurs, live valves, power pedals, toaster, and vibrator would be a nice feature. Integrate it right into the frame and let mfgs run a USB-C off their gadgets.