I played Morrowind for quite some time, probably around 200 hours or more, but never really got anywhere in any kind of story. I was the Grand Magister of house ehhh, the evil wizard guys, but did it matter ANYTHING at all in the rest of the world? Nope, not really.
My stronghold was built to its highest level, and it was a claustrophobic shithole in the middle of a God forsaken desert of ashes, with absolutely no benefits or anything.
There were four billion dungeons on the island, but they were all the same, no sense to them or anything. Hey look, another hole with a weird name, I'll bet there's...yep, there's five automatically hostile smugglers inside, together with 2000 gold worth of loot. Whee..
And ofcourse, I'm not even mentioning the lack of a difficulty level, meteoric rise through levels, absurdly slow movement rate (I always cheated and gave myself a speed of 300, even at that rate it takes hours to walk across the island, why does the default rate move so damn slow??)
The whole world was stagnant. Don't get me wrong, I think as RPGs go, Morrowind was an important step forward, and I hope to see more of its kind, preferably with more interaction and a better storyline.
As for DX : IW, it will be shorter (only around 20 hours in length), which saddened me when I heard of it, but considering that I STILL
found new dialogue on my sixth time through the original, and that this one is a more open system, with different mission depending on which faction you work for (and there's four of them), and that is has Havok physics, so there should be absolutely gajillions options to get around or through things, and I'm thinking we're talking easily a few hundred hours of just sheer gaming goodness.
That said, no game is ever as magical when you replay it than it is on its first time through, and as such, I'm sad that it's "only" 20 hours. Which is still approximately four times as long as Max Payne 2 is...
Btw, I'm replaying the original one more time (my 11th time I think), with 6xFSAA, 16xAF at 1280x1024, and the graphics aren't all THAT bad to look at now.