Yes that's highly interesting, I'd need to know how much of the code is shared between both projects to see how much work would be involved.
However what I have in mind for the moment I get some time is to improve actual GroovyMAME engine, there are many issues here and there that I have found during the last months that require rewritting some bits of the code, as well as the nVidia support via Powerstrip that's one of my priorities.