Not to sound negative or cynical, but even if BZ3 became a reality (unfortunately, I doubt it will), would it have everything that I like about BZ1?
I like the storyline of BZ1, the missions in BZ1, the AI in BZ1, the command interface of BZ1, the menus of BZ1... the list goes on. It would basically have to be an attempt at making 1.5 patch/mod under a different name.

I'm picky. I don't play BZ2 because the interface is different and the control of my own aiming reticle is feels awkward, too sensitive, and out of control.