Any chance that Chaosium would contact the authors?
Seriously, I'm extremely pleased with this purchase and would love to see this go back into print (revised, of course). I was actually worried that I would have to create an entire universe if I chose to do a space opera using BRP. That X,Y,Z grid really blew my mind. It's so simple, but since I suck at math, I would never have thought of it. And it always pissed me off that all the systems I've encountered never came up with a good way to calculate interstellar travel times (or, if they did, they just wrote it so sloppily or dense that I couldn't understand or cared what they were saying).
I really hope that Chaosium does do some stuff with space opera that deals with characters planet hopping--with a good system of determining distance and travel time.