Lots of speculation on the last 5 or whatever. I think it is ambiguous enough to do lots of different things. I suspect if we could categorize what attributes each of the models we know possess, we may be able to start to divine what (human) attributes are unaccounted for. I mean if they were designed around the 7 deadly sins, we could start to get into 1=sloth 2=gluttony etc. We don't know the list / attributes that Moore used, but maybe the holes would point us in the right direction. I have no idea though.
For fun - I found this on YouTube.
http://www.youtube.com/watch?v=zxX0DKE3oqw&eurl=
I liked it since some guy did it in his spare time which I think is neat. my favorite part is Spoiler:
when the Viper turns around in the trench and blasts the pursuing Tie Fighter.