I have thought the same and I don't have a great answer. I have operated several boats over the years at night and I am comfortable with the various lights used. The USCG says only that we need a flashlight when operating a kayak at night. I don't really like flashlights and they are cumbersome when paddling. A head lamp would solve the hands on the paddle issue. A strobe is only supposed to be used if in distress. Nav lights could be added but would requite batteries and mountings.
I have not seen anything that I really like but I have started using a couple of LED button lamps which I can clip to my PFD. I also carry a flashlight.