Furcia Four-thousand sounds apt. 
Zorra Four-Thousand too and reminds us about the all-mighty Zorro slots ;-)
Now seriously, using the "A"+500/600/1000/1500/2000/2500/3000/3500/4000 just adds confusion... people interested on a new machine will google using that names and find links about an old machine and think "bah! fossil hardware". Bad marketing idea, just like releasing right now a machine named "AppleOne II"
