Hmm, might explain why his status said Japan, Tokyo.
Anyway that doesn't answer the first question, does it? I'm not aware of another big moding community for ff7 than qhimm. And I guess there isn't one or at last a very very small one. We shouldn't forget that this game's home is the psx and Japan, so only a minority played it on PC. Reminds me, wasn't the re-release the first time of an official release of FF7 on PC in Japan?