It's always tricky to get everything together: roms, XML, art, story files, etc. It doesn't help that there's so many different naming schemes out there. Perhaps it would be a good idea to check with truRIP regarding their plans? They're working on complete sets, mostly on the newer sets at the moment, but I believe they also want to tackle the older systems. That might be the best way to get a complete database with all needed files together. I'll see if I can contact them.