Supposedly EQ had some sort of corpse problem, in that you'd die and all your gear and everything would be laying there and you'd have to run naked to get it, but after too long wolves would eat it. This sounds like a terribly unfun system, so I doubt it ever existed. This is also why I don't believe in evolution, since I don't think I'd have enjoyed being a monkey back before we killed all the tigers. But it gave me an idea: maybe raiding would be more fun if death was a really miserable, time-wasting experience.
Frankly I think death is too easy in WoW, or most games, really. And no, xp loss isn't the solution. That doesn't even make sense. Do we have any proof at all that death reduces knowledge or muscle memory? We don't. It's simply an unrealistic mechanic.
Or take your average game of any sort: you die and what happens? You go back to a checkpoint, a save spot, you get a rewind button. Psh. I once played a game with an option that if you die it deletes the character file. Yea, permadeath that. It did also have escape pods, but those took up space that could be used for missiles instead.
I say we look at this silly EQ idea again. When you die, you have to go drag your corpse back. Before wolves eat it. Or Scourge. Or demons. Or Forsaken players, who may or may not be on your own side (officially speaking, since in all reasonable terms they are on their own side). To compensate, we should be harder to kill. But not by much.
When we wipe on a boss, what do we die? We all die and in effect we reload the boss. Everything ends up exactly the same as before, just with a bit less armor durability and a few missing potions. And the boss is just as oblivious as ever, outside his aggro range. Wouldn't he be more cautious? Less inclined to let this puny mortals run about if he knows they're trying to kill him, and may have come close?
Rather than reloading, we should instead retreat. Raid going badly? Run. Run like hell. Grab the dead guy next to you and drag him with. You're going to have to get the corpse again anyway. Before the boss does. Because guess what, he's not going to reset and run back to stand around waiting. He's going to start mashing up your corpses to make sure you stay dead and taking armor for his collection. But he's also not going to magically heal up to full. So guess what? Retreat, heal up, drink up (you are out of combat), and get back in there for another shot.