I dont know how hard it would be to code, but for me, having a loading of the track progress bar on the iOS remote would be wonderful. I live in a rural area with terrible internet. Streaming 24/96 is fine, but when the album is 24/192, I have to pause the first track until it loads and then play. Once there, each following track caches ahead and there is not a problem.
It would be convenient to have that in hand, rather than guessing and or going to the computer to see the progress.