Just to confirm does the OPPO's new HDMI inputs: 1) Send the video signal to the HDMI Outputs of the Oppo 2) Provide Video processing of the input HDMI signal.

If both of these are true, it would seem to make these units equivalent to a minimal input digital pre-pro (albeit one that does not include room correction).
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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