If I never see another bad line-drawing of a Wookiee in a cantina throwing a stormtrooper, it'll be too soon
To be fair, production values have significantly changed since the 70's and 80's. If you want really terrible, go back to the original D&D for some awful artwork. It's like comparing - oh say, original series 60's Doctor Who to Modern Aughts Doctor Who.
I know...after all I still have the original Chivalry and Sorcery books, and some of that art was terrible. It wasn't really the art I was commenting on, it was more about the recurring and repetitive themes.