Yes, a majority of the illustrations in the EverQuest RPG book are quite gawdy. But some are real nice too. However, there aren't enough of those. But I always expect rpg books to have mediocre art, so when one doesn't I'm just pleasantly surprised.
Anyways, I think the EverQuest RPG can be great and a lot of fun if you've got a good DM and/or a fan of the setting. I myself have played EverQuest but after a while didn't care for it anymore. However, I'd jump into a pen & paper version to play if any of my friends were to run a game.
But I'm thinking that if you're a D&D fan, there's nothing really here that's more interesting to warrant picking up the book. Unless of course, you just enjoy expanding your rpg library. I'm kinda like that. I buy books even though there's little chance of me playing it. Just to read and stuff.
I figure its like the StarCraft sourcebooks for Alternity. The attraction comes from being a StarCraft fan. Those that aren't really could easily find other settings that are as interesting if not more. Its the same for me with Star Wars, Star Trek, EverQuest, DC Super Heroes. I'd play in any of those rpgs because I had fun watching their movies, reading their comic books, or playing their game. With EQ, I didn't have fun playing the game, but always felt the world had a lot of fun potential. Which could be done in the RPG and not the online game.