One of my frustrations with the OSR is that many of the games have very poor cover art. I like the S&W core rulebook, the black and white WhiteBox rules (and I admit that's not even super art, but I like it), and the deluxe red Labyrinth Lord covers. Pretty much all the others are amateurish, usually in some perverse desire to ape the originals. Newsflash, if TSR could have afforded really nice art for their covers, we'd have had it. Notice the improvements in cover art through the 1980's and 1990's. There's a reason the old art style was abandoned as soon as TSR could afford to do so.
Most of the OSR covers appear to be designed for a 12 year old from the 1980's. If I was still that kid, I'd be happy. However, me, and probably 90% of OSR gamers, are in their 30's and 40's. I think publishers should take that into account.