Yes, this mod will be decent adn rule Dmz, once it is completed. finishing the sprite system and the models will be the tougest part, seeing as they are visual and need fine tuning. Programming is rather simple, to fix a sound loop it only takes a couple hundred lines of command (may sound like a lot, but is done in about an hour or so if you know what you are doing).
What exactly is the Quake engine written under? I dont know what program was used to add lines and stuff. IM guessing c++ or visual basic. Im not familiar with the engine specifics of this game. I know Rainbow 6 is under c++, since it uses c++ libraries to run it. I had to update visual basic to run this game better, so im guessing its VB.