@gthirteen
Several Oppo successors have emerged over the last couple of years, but despite sounding promising on paper, they haven’t had much of a profile in the stereo-audiophile press. They’re more often reviewed in home-theater magazines.
Most promising is Magnetar’s UDP800 universal player, which received a rave review in the current (June-July 2024) issue of Sound & Vision. It boasts an Oppo-like interface & form factor, excellent build quality, similar CD/DVD/BD/SACD/whatever disc compatibility, & 2024-class format support (including 4K UHD video). Downside is no phone app & a lack of multi-channel analog outputs. But, as you suggest, the latter may not be a dealbreaker in this age of HDMI & reasonably priced external DACs.
And the pricing is pretty reasonable, similar to that of the higher-end Oppo models back in the day. When one of my Oppos finally dies, this may be the first replacement option I consider.