They did it better than anyone else. Take for instance RZA's Bobby Digital where the artwork depicts RZA as a Superfly of sorts in classic blaxploitation style. Women, guns, women holding guns, the huge Wu logo behind it all, explosions and the superfresh text treatment. And the white space helps create room for the detail to shine. Wonderfully done.
The other end of the design spectrum is the Gravediggaz first outing, Six Feet Deep. The album marked one of the earliest Wu side projects (as opposed to solo projects) yet that signature look of danger and darkness. The exaggerated contrast of black and white and everyone mean-muggin--this is vintage Wu right here.
Of the Wu solo projects, Ol Dirty Bastard's first solo album takes the cake, hands down. The insanity about this album cover, which features Dirty in all of his glory on a welfare identification card, is that after dropping this soon-classic album, he went and picked up his food stamps at the welfare office and then drove off in a limo. We have this downright stupid album cover to remember the event by.