Wait a minute, you are all concerned about the UI of the RR2150 and "QC Issues", but you pass over the fact that the Music Hall wasn't designed to use a unique remote code as an annoyance? It would seem to me that this is much more a QC issue than any play in the source selector knob.

I have the feeling that like many of us you make a commitment to whatever you own and overlook its faults to justify your purchase.
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Living Room 24x18 open 1/2 flight up to a raised dining room/hall 24x12
Outlaw 976 pre-pro running 5.1 system
Outlaw 750 for Artison Masterpiece LCR and 2 NHT SuperZeros rears
Velodyne Servo FX-1200
LG OLED65C8PUA via HDMI2 to/from 976 HDMI ARC
Roku Ultra
Samsung BD-D5500 BluRay
Amazon FireStick 4K to 976 Aux HDMI input for Amazon Music Ultra