Are you saying the problem is that Roon and OPRA drifted somehow and that Roon needs an update to understand how to ingest from OPRA?
Roon created OPRA. It didn’t need to exist. Roon could have ingested directly from AutoEQ, which is what OPRA does. There was no hunger in the Roon community, or elsewhere, for a layer on top of AutoEQ. There was hunger for headphone-model specific convolution and EQ, not for a new branded complex open source effort.
Nobody was ever going to contribute significantly or act as steward of OPRA other than Roon. It’s not appropriate to blame open source or something like that for the abandonment of OPRA, even if it gets a bit of love in the next week. It’ll probably get abandoned again as so many other core “features” have been such as network discovery, new music playlists, Roon Radio, search, metadata sync with Qobuz/Tidal, box sets, etc., etc.
That’s the experience of being a Roon user.
That seems like quite a knowledge gap. I wonder what else you don’t know. The community is here to help you close this gap if you want them to. Just start a thread - people will tell you.