Great artwork intimidates me. I like the retro-80s look or the generic look found in GURPS and HERO System. IMO, great colorful artwork says, "you can play this game by using only our rules." While "crappy" artwork says, "you can play using our rules, but we prefer that you make the game yours." So, I'll be replacing their suggested RPG engine (d20 Modern) with Spycraft 2.0.
I rated this product four stars based on my bias towards Star Trek, d20 systems, and retro-80s art.