This is a good topic. I've always liked the elves in the elder scrolls universe since they're pretty unique and each have different attributes that make them special. Their history is even more interesting compared to men. I hope the Dominion is here to stay and maybe have the next game take place in the Sumerset Isles since that's where people thought the 5th game was going to take place. It would make much more sense now to see it from the Thalmor perspective since Betheseda IS setting us up to hate them which could end up changing many peoples opinions about them.
Have you read the series of books
The Rising Threat by Lathenil of Sunhold? He was an Altmer who fled Summerset Ilse to get away from the Thalmor. He states in his books that the Thalmor, who were a minor political power then, rose on a wave of political support by falsely taking credit for ending the Olivion Crisis. Then they started to kill/exile any Altmer dissidents who didn't agree with them. Lathenil states that they stated "progroms" in an attempt to purge large numbers of people who didn't agree with or were against them, using the excuse of getting rid of those with "mixed blood".
When the Thalmor had enough power, they rose up and killed the royal families, and the kings and queens that had ruled over the Almeri people for thousands of years, in order to become the ruling faction.
Their "purges" have moved to the mainland as well, as during one quest, you meet a Bosmer who's family was wiped out by the Thalmor in Valenwood
Lathenil of Sunhold also believed that the Thalmor initiated the conquest of southern Morrowind by the Argonians through persuasion. This seems to indicate that a strong, united Morrowind would be a threat the Thalmor, not an assest.
According to Lathenil, First Chancellor Ocato was assassinated by the Thalmor, and the post-script to the book by another auther indicates that Lathenil himself also met a violent end. Possiblly also assassinated by the Thalmor
This shows at least that not even every Altmer is comepletely on board with what the Thalmor are doing, although I suppose as time goes on and more an more "programs" are initiated, the number of Altmer who will openly dissent will steadily decrease.