The interview I did with fpscentral has finally been posted for your viewing pleasure.

QUOTE
What has been the hardest obstacle to overcome in the making of the mod?

It would without a doubt have to be the design phase. Keeping everything consistent is very hard, which is why we have a detailed design document. When we started getting artists, it was even harder to convey our imagery into something the other could understand. Most of this is under control now, though. The next big challenge will be coding the whole thing.

You can find the full interview here