You did play Morrowind right?
A good chunk was dedicated to the Ashlanders, the Telvanni were mostly Dark Elves, the Camonna Tong were a group of racist criminals, there was a quest that had you protecting an Argonian from racist Dark Elves etc etc.
The game should be centered around Nords, and there should be lots of story involving the relationships between the races. Because after all, what's the point in setting it in Skyrim if you aren't going to tell the story of Skyrim and the Nords?
Oblivion was kind of a let down in that area, but maybe that's because the Imperials have always been kind of bland IMO.
I realise that

haha. I guess Oblivion did that heavy central thing of Argonians being slaves as well
Were there that many slaves in Oblivion? In Morrowind there were cages with Argonians and Khajiits for sale in Sadrith Mora, and Suran had a slavers market.