What ever happened to the advanced ballistics system that was advertised a long time ago?
The one from when we first released? Like pretty much everything we had back then, it was just poorly written due to lack of experience and over-complication (thus requiring re-writes). We're working on some interesting stuff with bullets now, and even as it stands it does the job -- anything too complicated would probably yield a very small noticeable change. One of the quirks of game design I guess.