@bradb, thank you for the update.
Although the new endpoints will fill in some of the gaps, the main concern is the REST API querying capabilities. At the moment they are poor in comparison to the XML-RPC API. We need to see significant progress on that front so that developers can easily migrate to REST.
Also, several weeks ago Tom said there was no plans for the REST API to query the Custom Fields, due to a technicality. You need to address that blockage, because we can freely do that in the XML-RPC API without a problem.
I agree with @Timothy_Smith that we need to see progress happening in 2025.