Hehe, you know I was looking through the very first DarkMatter the other day, and I think TGC could do a lot worse than reworking those for FPSC and DBPro - like make higher poly versions, make normal maps for them. The main thing is the sheer volume of media you get - there's practically enough there to furnish 1 or 2 games completely. Having another model pack even, with that amount of media would be great.
I prefer to have something and not need it, than to need something and then have to model, uv, animate, mollycoddle, export, convert etc etc. Maybe the TGC store makes that kinda redundant, but I'd certainly look at buying a model pack with lots of media, that matches in style and scale.