There are so many engines that games use nowadays that such a program would probably take a few years just to debug let alone program. I thought of this a while back. Maybe if we start a funding program on kickstarter to fund such a project. It will probably be a major deal. We will need support from several big gaming companies. Are you prepared to volunteer lots of time and effort to a project this size? Maybe Valve corp. would be interested. Another idea would be to get Steam for Linux to embed PlayOnLinux for games that don't run natively on Steam for Linux.