Very little I should think, and useability is always a factor.
Your system is well balanced, a slight gain might be had from something like the Bantam One. You’d have to explain what you think could be improved. I’ve heard the Avondaled 250 a few times, drive, PR&T etc but hardly the last word in finesse or resolution. If you value the former above all, stick with it.
I have resolutely avoided any real streaming knowledge, partly because better models seem to arrive each month. All I know is a Mac Mini running Audirvana sounds much the same as decent CD and that’s good enough for now.
Perhaps a PM to strictlystereo. He sells the Graham speakers, stocks lots of streaming goodies and has probably scanned this thread.