Being able to run OCaml on the jvm with a good interop interface would be a good thing imo. There are Java libraries that will never exist as OCaml libs until Ocaml is as popular as Java, and for as long as Java. It would be nice to be able to use those libs from OCaml source. Even where there are simliar libs that can be called from OCaml native code, using them would often be trickier because the interface is at a lower level.
It has been difficult to find time to work on it, but I started to update the underlying libraries to support the latest version of Java. I have used OCaml-Java in production for more than two years (to serve a REST API), and encountered no major problem. I will be glad to assist you if you encounter any problem. Regards, Xavier