Dremora, or as they like to be known The Kyn. Probably the most heavily featured non-playable race in the Elder Scrolls series. We know that Dremora society is aggressive and war-like, but it is also an honorable and loyal one with various clans and castes. We know that Dremora can be reasoned with, can act civilized and even friendly at times. And we know that a few have even been bound to nirn to live "normal" lives.But do you think a a whole Dremora society could work if they tried to form one on nirn? For instance what if a few thousand Dremora both male and female and of various casts were summoned, cut off from Oblivion and bound to nirn in a mostly uninhabited area of desert in Elsweyr or Hammerfell? Would they try and build their own nation? Would the other races let them? Would they go on a killing spree until they all died?
Remember that for the longest time that Orcs were seen as pretty much beasts and monsters and were killed on site and it's only relatively recently that they have been allowed to integrate.
So what's with the Xivilai's Clan?
You're talking about Nirn, where not even mer and men get along, and suggesting we drop a colony of Dremora in the middle of that shit? Dremora, who, I might add, would probably be pretty pissed about being summoned and cut off from Oblivion. You're just asking for a bloodbath. I doubt it would end well.
Besides, I don't think there are "a few thousand" mages out there who could summon a Dremora each. That's some seriously high-level conjuration spellcraft, dude. Even the most powerful of Archmages can only control a pair of Dremora at a time.
Well that's my point, war is the natural state of nirn so having some Dremora city in the middle of it isn't going to be much different. Also as I have mentioned not every Dremora would be pissed about being cut off from Oblivion.
Their are other ways of getting Dremora on to nirn, even though that's beside the point.
This wouldn't be mere war, it would be genocide for one side or the other. Dremora, especially a large portion of them, would want to eliminate the mortal beings. Likewise, and perhaps out of survival, the mortals would seek to remove the Dremora from their lands, forcefully or otherwise.
Also, they'd probably kill the wizard or whoever that was responsible for bringing the Dremora colony up from Oblivion.
Hell, I'd not even be surprised to see an alliance of mortal races against such a Dremora colony. Then they'd go right back to fighting among themselves.
Bottom Line: There is no way Dremora could be integrated into Tamrielic society. They could be brought there, and they could take over the society, or be wiped out/banished back to Oblivion. There's no middle ground.
Not sure how they would get along with the other races, but if you remember, Orcs used to be a non-playable foe in Arena and Daggerfall. I think if something were to change in the Dremora zeitgeist that allowed them to accept and get along better with Nirn-dwellers and there were some great event that sent masses of these newly peaceful Dremora to Nirn, they could be an interesting new addition to the races of Tamriel. I also think it would be really cool to play as a Dremora.
Except neither are Daedra. Being a Daedra garnishes a different level of antipathy.
To put it into perspective, Daedra worshipers in much of Tamriel are feared and there is currently a group that apparently has free reign to kill said worshipers... that is after they are given the chance to see the error of their ways because they are at worst lost.
Something that is a Daedra and unbound? Killed - relatively speaking - on sight.
They're the exception rather than the rule, and besides, the mortals of Nirn aren't going to line up all the Dremora that show up and say "Are you good or bad?" and then only kill the bad ones. Like, if a clan of Dremora showed up the people would just go on a witch hunt.
There are good vampires, werewolves, and other stuff, too. But the "normal" people of the world always hunt them down and kill indiscriminately.