My first thought was 'you're trying to make an Army Builder for RPGs.' ... and then I realized, Lone Wolf already makes such a thing ... but they're a commercial software company, and from the looks of things, they only support three games right now.
I've played way too many RPGs over the years, but never any of the White Wolf stuff -- you're probably going to need to talk to lots of people who are familiar with different systems, to discuss the relative difficulty of describing a system in a given data structure. I personally haven't done tabletop RPGs in almost a decade (or LARPs for more than 6), but you can probably track down people who are passionate about a given game system who are willing to give you a little time.
I don't know how busy he is these days, but Drew Curtis from Fark was a huge Shadowrun fan back when I worked with him in the late '90s ... although I wouldn't suggest dropping my name, as I burned some bridges when leaving.