Umm, how about those who want to see how your choices effect the ending? Though I guess c&c isn't something the "real" Dungeon Siege fans want, so it doesn't matter. Right?
Also what it comes to opinions of those who pirated the game. Usually these are the people who weren't willing to pay for the game in the 1st place. I would think these people won't have very positive opinion about the game. Because if they actually liked the game most of them would have ordered it after the demo.
Sure there are those as well who just can't wait the extra 7-12 days and must have it immediately, or those who can't afford anything.
Not to mention I would imagine majority of the people who pirated the game won't actually go on forums and openly admit they pirated the game... So there might as well be loads of pirates who liked the game.
So yeah, I would rather trust the reviews at this point and the demo I've played.