IMHO, Fred is right about the combining of systems. If the electronics die, can one buy new electronic hardware and re-install? If the helemet gets banged up or just needs replacing, can one buy an empty shell and move the electrics over? Buying necessary parts, instead of replacing an entire system would certainly be more economically sound.
What I have never figured out is the ear pads inside a helmet. My dumb Scorpion EXO1000 let's me pump up the cheek pads, which is uncomfortable as all Hell. However, what if the ear pads were set up in a way they could be aired up and seal against the wearer's head, basically closing off the wind noise, like ear muffs.
I know people's heads differ, but a little bit of adjustability would create a good fit for 95% of riders. I think THAT would be useful.