All told, while I've read but the Player's Guide to Wizards, Sorcerers and Bards, I was, all around, simply not impressed, particularly for the amount of advertising that went into them, which surpassed most if not all their other books. At least, it seemed they were being advertised more. Particularly the entire "Useful beyond the Scarred Lands" schtick - though I suppose that's debatable.
Anyway, the art..well, it very much isn't SCAR. Beyond that, I actually like Mark Smylie's stuff quite a bit. While conceptually, the idea of breasplate/plate-mail clad Wizards and Bards strikes me as a bit out of place, I think the artwork itself looks damn good. That guy, in my opinion, can draw armor. I particularly liked the picture of the crafter and that imposing suit of armor behind him on page 72.
Beyond him, though...eh. You're right. The artwork ain't so hot. Maybe it's just me, but even the covers really aren't so great. Meerlah's made out to be one ugly looking bard. Still, that's the least of it. Other than Smylie (Who I honestly really like), the rest of the stuff inside the Wizards, Bards and Sorcerer's guide really could use some polishing.
But, the question, are you being an art snob...?
Sort of.
However, I look at it this way: If there's two books, both more or less equally appealing content wise, and both are essentially worth the price of their content (which isn't to say nearly the same price), which one are you going to go for? Well, if one has better artwork than the other, I think that is a valid part of the decision.
But, as Nightfall said, it's the content which matters most. I can unfortunately add nothing in regards to the Cleric and Druids book, but then again, after reading the Wizards, Bards and Sorcerers book, I've little desire to bother with the rest of them.
In regards to Voadam, editing in which way? Grammar and spelling-wise, I found, in regards to the Player's Guide to Wizards, Bards and Sorcerers at least, it is essentially fine. Rules and numbers wise, I found it had a number of holes (Being that much of it was made for the original 3rd edition, its conversion over to the revised 3rd edition was less than complete).