Divath could have conceivably survived. He was a very powerful wizard and could have teleported away, and besides he often was away on research and diplomatic missions in other provinces. It's not unthinkable that he survived Red Year. As for his daughters, his Dwemer and his Argonian warden, I cannot say. I would lament their loss as much as his, but as callous as it sounds he's worth ten of each (with the exception of Yagrum of course, whose death would be tragic indeed.)
As for the opinions and viewpoints of Sotha Sil and Almalexia, we have http://www.imperial-library.info/mwbooks/2920.shtml which is a dubious but entertaining source, and http://www.imperial-library.info/obscure_text/sotha_sil.shtml.
Character dialogue from Morrowind pertaining to the Tribunal and specifically these two individuals:
Also known as 'The Temple.' Most Dunmer worship the Tribunal, three mortals who became gods in the distant past before Tiber Septim. The Dunmer are a serious people, and very serious about their gods and the Temple. You won't find beggars in Morrowind; the Temple takes care of the poor. The Temple provides health and education for worshippers, and stresses family duty. The Tribunal are named Almalexia, Sotha Sil, and Vivec, collectively called Almsivi. The Temple believes that Almalexia, Vivec, and Sotha Sil were mortal guardians of Morrowind who walked the earth, defeated the Dunmer's greatest enemies, the Nords and the Dwarves, and achieved divine substance through superhuman discipline and virtue and supernatural wisdom and insight. Like loving ancestors, they guard and counsel their followers. Like stern parents, they punish sin and error. Like generous relatives, they share their bounty among the greatest and least, according to their needs. They accept outlanders as members, but few outlanders join except for the services. Talk to Feldrelo Sadri at the Balmora Temple if you're thinking about joining.
Lit.: Fellowship of the Temple (TEST I2: 360).
Lord Sotha Sil the Magus is one of the three Immortal God-Kings of Morrowind, a Pillar of the Tribunal, and the patron of Artificers and Wizards. Sotha Sil was the mightiest wizard and most wise counselor of the First Council. Companion and teacher of Nerevar and Vivec, Sotha Sil is the Light of Knowledge and the Inspiration of Craft and Sorcery.
Almalexia is one of the gods worshipped by the Dunmer in the Tribunal Temple and a member of the Tribunal. She was the wife of Nerevar, and one of his most trusted advisors. She's known as the Healing Mother and Lady of Mercy, the source of compassion and sympathy, and protector of the poor and weak. She's no tender-hearted powderpuff, though. She's an important symbol of Dunmer independence to those who resent the Empire, and the Hands of Almalexia -- her personal guard -- enforce a strict adherence to Temple doctrines.
Other books in which Sotha Sil is mentioned:
2920, The Last Year of the First Era, The Anticipations, Vivec and Mephala, The Battle of Red Mountain, and the Rise and Fall of the Tribunal, Dagoth Ur's Plans, The Homilies of Blessed Almalexia, Kagrenac's Tools, Mysterious Akavir, The Arcturian Heresy, Varieties of Faith in the Empire, The War of the First Council, Nerevar at Red Mountain, The Story of Morrowind.
Almalexia:
The Story of Morrowind, 2920, The Last Year of the First Era, The Anticipations, Vivec and Mephala, The Battle of Red Mountain, and the Rise and Fall of the Tribunal, The Plan to Defeat Dagoth Ur, Dagoth Ur's Plans, Fellowship of the Temple, Kagrenac's Tools, 36 Lessons of Vivec, Nerevar at Red Mountain, Varieties of Faith in the Empire, The War of the First Council.
http://search.freefind.com/find.html?oq=sotha+sil&id=72791987&pageid=r&_charset_=UTF-8&bcd=%C3%B7&scs=1&query=almalexia&Find=Search&mode=ALL&search=all
I'm pretty sure neither of them either mention CHIM or are mentioned in its context. It's implied that Sotha Sil was seeking alternative godhoods through his sorceries and his machines. When we discover his broken body, his arm muscles had atrophied to the extent he looked famished. He was little more than skin and bone in an iron lung, attached to his computers by wires. His long, yellowed fingernails appeared to have been untended for well over a year. He probably was lost inside his quest to reshape the world from his control room and didn't notice Almalexia at all when she killed him. Another explanation is that he was dead already when she got there, and she perceived the silence of his death as mockery and attacked the corpse, breaking his mask.
Apparently Almalexia believed that after killing Vivec and Sotha Sil, she could regain her godhood by cheating with the Dwemer weather device and by killing the Nerevarine. She somehow believed, in her insanity, that this would renew worship of her and give her powers back to her. It's not an entirely unfounded theory, to her credit. There are many ways to achieve godhood as MK posted: http://www.imperial-library.info/obscure_text/nu-hatta.shtml
MK: Below are the proposed categories by which to measure these divinities. I think most of them lead falsely to a silly DnD number-crunching mechanism of Who’s Cooler, so I’ll ignore them for now. After all, gods are beyond our ken, even though it is us who are their true parents.
- Origin as a mortal
- Divine Acquisition
- Divine Level (standing against the Aedra & daedra & other god-heroes)
- Lifespan
MK: "A 'jill' is an archaic term for a female dragon. The minute-menders would take on a suitably draconic form."
Almalexia began as a mortal, acquired divinity, and stood against other god-heroes, even after losing her divinity. It's possible that had she succeeded in vanquishing the Nerevarine, she could have regained some form of godhood. It would have been different from before as its source would be different. It would possibly be weaker, but it would be a form of godhood. That's my hypothesis from the available data.