A little bit of spoiler, of course....
Kinda want to revive the high priestess of Trinimac, but you can actually save her...if you decide to kill your friend. I didn't know that and of course didn't betray my friend to solve the fight quicker, causing her death... She would have bring the balance of trinimac and malacath believers in orsinium, it's sad she died in my main char play through...
I sacrificed the Prophet in vanilla main quest. It really wasn't a tough decision for me, Titanborn and Sai are still young and love each other, Varien is old and willing to sacrifice himself to bring the closure. He died a satisfying man, and we get to see his spirit at the end of orsinium. Tho I'm sad that he died, there isnt much reason to bring him back.
Tho, the ONE character I loved that show up in morrowind, only to be killed by ZOS after few lines of dialogue, should be bring back to life. And that is Vigard the Sparrow!! I couldn't believe ZOS killed off one of their best character, and whoever designed that quest should be ashamed that he/she didn't see the potential of Vigard

So who do you want ZOS to bring back to life?
PS: DARIEN IS NOT DEAD DON'T YOU DARE BRING HIM UP