Have you actually inquired with
@fdg about the possibility of adding some kind of retrofitted remote to your US4, even if you need to resort to some Universal remote which can learn the main "tricks" of the US4? My own V281 originally arrived without a remote and I had to send it to
@ArthurPower to have the remote added (with an optional choice between standard or relay volume control receptivity added to the V281). Now that seems like ancient history, which makes it all the more surprising that Fried would make a new SOTA flagship (US4) with all options of any retrofitted remote completely banished from it! That seems and sounds sooooooo decidedly 20th century, it is not even funny. We might as well call the US4 the "stone age" edition of the Niimbus if that were the case. It is definitely worth asking
@fdg and
@ArthurPower about this possibility, in my opinion.
I am just going on the hunch that if a retro-added remote was possible for the "ancient" V281, then it ought to be possible for the US4 as well. Of course it is possible the operation could be too complicated and prohibitively expensive to be considered "practical" by many people, but that would be an entirely different story. I could also be totally wrong about this, but I am just saying it wouldn't hurt to ask.
Just my. 2c