Pocahontas, is that the name of your laptop?
Anyway, I know what you mean by awesome mods. When you no longer need to worry about not having Tribunal.esm and Bloodmoon.esm, some totally brilliant ones are opened up for you. One of those mods is a dungeon mod I downloaded at...Tesnexus, I think. I don't remember the name but what it does is alter Odrasal, Velmyan and Dagoth Ur into bigger, harder, better versions. Well, mostly better. I didn't like the damn teleporter puzzle in Dagoth Ur, Velmyan's lifts never seemed to work (forcing me to follow the shaft with tcl) and Odrasal had some mean moves. (Mean is in:"Hey look, a door! Why won't you press it, huh? So you did? Good, enjoy your half a second fall into a pit of instant-kill lava!")
The best part is right at the end, definitely. The boss-fight that was a bit of a dissapointment in vanilla is now harder than hell (both stages) and much more expansive. The areas they're fought in are different as well. So umm, how about some pictures detailing Luper's final battle under Red Mountain? (Warning, there will be spoilers)

It looks like Dagoth Ur kept a three-dimensional map of Vvardenfell in his room. That can't be a good sign.

A view of the map for the interested.

Instead of fighting himself, Dagoth Ur prefers to send out astral projections of himself. This is the first one, but I'm pretty sure I got close to slaying ten of them. And all are more powerful than an Ash vampire.

Given that the bosses are so ridiculously powerful now, I felt no shame when I jumped over the fence and bypassed the whole spiralling walkway. I was planning to just run up to the heart and whack it before Dagoth Ur had a chance to figure out what was going on. Hey, it worked in Vanilla Morrowind. It would work again. Besides, what's more badass then leaping up higher than a building and then landing on a thin, rickety bridge far below the ledge you started from?

A barrier. Crap.

I found the real Dagoth Ur hiding in a crypt. We fought for a bit, but I was only getting my behind kicked to the moon, so I ran.

After managing to off all the astral projections while being chased by the real deal, the barrier finally vanished and I could go all stabbity-stab-stab on the heart.
After that, the mod goes so far as to turn the final escape into something very cinematic and very lethal. I don't have any pictures of that, though. I was too busy running for my life.