The Borg in the series were pretty generic to begin with. The cube, sphere, and diamond had a similar look on the surface throughout the entire series with only one exception. Lore's ship (which is assumed to be an assimilated alien ship). The Borg in SoA 2 use the same texture on most of the models. That is a good thing, because it saves system resources, and prevents the 2 gig crash which is a sins issue.
Thanks for pointing this out, but goafan is right. You should have posted this on the SoA 2 topic 