Nothing there that floats my boat, but then I ride for the experience and have no desire to have people/GPS talking to me or music playing when I am riding. Riding is me time and whilst I can see the attraction for many, it's not for me.
I am one of those. I often ride with a friend and communication is a must, hence the Sena's. Riding together or alone, I always listen to music. Not sure why, but for me, music + riding = super great. I don't find music distracting at all. But my friend does, and he never listens to music.
All the additional lights in the world (whether mounted to you or the bike) will not help when those you want to see you are looking at their phone.
You are far better off just being 100% paranoid at all times. Trust no other road users and treat them all as if they all actively want to kill you.
When I stop at lights I am constantly scanning behind me and if a car approaches I flash my brake lights, but I am also ready to get the **** out of there at a moments notice. Yes, I have trunk level brake lights but those are mostly because the C10 & C14 tail lights are at best weak.
You sound just like me. I always ride like everyone is trying to kill me, and, honestly, it does take a lot out of me. I still believe in more lights, it is helpful to be seen when people are looking. But I never assume anyone sees me.
I can see the attraction of the HUD to a minor degree but I don't have any real need for it.
It would be nice. But the problems with all that stuff are compatibility, complexity, and reliability. Every time I want to add some gadget, there are always all kinds of issues. And it starts getting really annoying.
The airbag suits are an excellent idea except that they tend to force you into a position that makes your arms MORE vulnerable to damage.
I like the idea too, but I also wonder how HOT the things are. The bladders that inflate are certainly not perforated. Half the year, I would be dying from heat exhaustion.