Like Brad, I've been to several functions at Oheka, staying over once. Unlike Brad, I've played the course twice.
It is not a CBM-design that is worth saving. Very few, if any, Macdonald features remain and it hardly serves as even a worthy amenity for the expected residential development.
If I was developing it as a residential community, I'm not sure I'd pick JN (probably not), but I certainly understand why a developer might think of them as a safe pick.
We here love our golf course architecture and always want to protect the Golden-Age (and before) geniuses we so admire, but ultimately some courses are better off not wasting too much time bemoaning their disappearance. This is one of them.