Bootgod, i hope your reading this..

I saw over at the aformentioned thread over at nesdev http://forums.no.intro.free.fr/redirector.php?url=http%3A%2F%2Fnesdev.parodius.com%2Fbbs%2Fviewtopic.php%3Fp%3D31392%2331392

That you're implementiation of the XML format allows for merging of clones into a single zip, over at no-intro we are hard at work for identifing parents/clones for this kind of merging, maybe using this XML based system will allow for a better more coordinated way to define parents and clones than the current text file list we use, see here for our current system:
http://forums.no.intro.free.fr/showthread.php?t=1999