It will never happen but update the Mac Pro, preferably to something that resembles the old "Cheesegrater" design. Make it easily upgradeable. I would be happy enough with that but obviously expecting a computer from Apple that isn't glued together is a bit futile.
Bring back the headphone jack or move to USB C on the iPhone and stop offering up proprietary solutions for Audio.
You want them to prioritize function over form? Place the horse before the cart?! Blasphemy! It is the height of hubris to tell Apple what we want. Apple knows what we want before we want it.