As Altmer are my favorite race, the Thalmor are my favorite faction. A powerful group of agents whose sole joy in life is to restore Tamriel under Elven control, they are essentially "Elven Stormcloaks". If you happen to be someone of their favored group expect to have a good life under a stable government. They don't even treat humans badly, even if they consider themselves superior - as long as you obey their laws they leave you alone. While their egoism is annoying it's rather justified - the small people of the Summerset Isles handed the ass of the Empire itself to them on a silver plate, and the Altmer in general are the purest of the Elves and by far the best mages.
Whatever humans have to offer for elves, the Thalmor has plus tenfold.
God Bless the Enclave
Gods Bless the Thalmor.
Two peoples, one struggle.
Ehrm... did you read the earlier post linking to MK's stuff?
They mean to erase the races of Men from existence on a mythopoeic level by erasing Talos. Heck, they mean to erase existence itself by erasing Talos.
They are not benevolent totalitarians by any stretch of the imagination. They're essentially a threat to all on the Mundus. Man, Elf, Beastman... any who don't buy into their utterly mad and omnicidal plan of returning to pre-creation "divinity" (IE: nothingness).
So unless, in universe, you are keen on being uncreated, the Thalmor are your enemy. They're even worse than the Enclave. At least they just wanted to wipe the slate clean for themselves; the Thalmor want to destroy the slate too.
Imagine that the Enclave suddenly wanted to destroy Earth the same way Vulcan was destroyed in the Star Trek 2009 movie. Nothing left, including themselves. That's an anology of what the Thalmor aim to do.