Wireless carplay/aa works in cars. Only a matter of time that it makes it to bikes. I would say that I dont mind a plug (reliable and keeps phone charged) but I want a cell phone in my pocket in case the bike and I have gone in separate directions. USB into coat seems like it wouldnt last long.As much as I love my dedicated GPS unit, I think with TFT display screens becoming more common, we're eventually going to see BT integration with smartphone-based GPSes. It makes no sense to have two separate screens when you can merge them. That way, your phone is safe in a pocket or somewhere in a pannier where it won't be exposed to the elements.
BMW already is experimenting with casting the maps app from your phone to the TFT on the R1250RT:
View attachment 59283