HM's "Wretched Abyss" form thingy blocking your door on the way out to do the Elf blood portion now has tentacles and giant eyeballs/gasball things floating out from it, and is now a sickly green instead of blue.

creepy ^^

SICK. I was hoping the dlc would actually change the vanilla experience.

That's awesome! I wanna go back and do that again now...

I concur

OP could you show a vid of it?

If https://www.youtube.com/watch?v=evWddUpkghQ (about the 39 seconds mark) is not on Solstheim, then some Morrowind ingredients (Trama root at least) have been added to the mainland.

Awesome. That was always one very minor letdownof mine that he was just a weird blue ball lol.

Nice. I like how they improve the base game stuff too with these DLCs, though that comes with a risk to cause some bugs

Has your choice in that quest so far influenced the story at all? Choosing to Champion HM or refusing him I mean, in the Septimus quest. And a bit off-topic, but did any other changes result? Like say, if you refuse the Blades when they tell you to do a certain something or they wont cooperate with you anymore during the MQ of Skyrim - do they in fact join the First Dragonborn?

That clip is on Solstheim, because you can see the volcano close by in the background. Likely the player jumped right to the boat before encountering the cultists, then found them on the island.

Not surprised.

"Shivering Isles" also changed Sheogorath's Daedric Quest as well in some way. I was expecting same thing to happen with Mora's quest in Skyrim since we are going to enter his realm.