After years in the cockpit there is only one true innovation that matters: Relief Tubes
Speaking of relief tubes, back during my days with the Az Wing of the CAF, I crewed Sentimental Journey, their
B-17G Flying Fortress. We used to give tours of the old girl, and one of the things people invariably asked was, "What's that?", while pointing at the relief tube.
Our semi-stock answer, depending on who was asking, was delivered very seriously. "That is the emergency tail wheel inflation system. You blow into that funnel on the end of the tube to re-inflate the tail wheel in case of an emergency. Would you like to try it out?"
You would be surprised how many people wanted to try it out.