Quite simple: What do you think of the whole races being locked to factions thing?
Personaly, I can see why they did it, but even if I supported it, (which I do not - there can be defectors and stuff you know) I feel it imbalanced. And here's why from what i have seen around the place:
Ebonheart Pact:
Nords: Way popular after Skyrim
Dummer: Always been popular
Argonains: Who doesn't love the beast races?
Daggerfell Covanent:
Redguards: Meh
Bretons: Meh
Orcs: Again, Who doesn't love the Beast races?
Aldmeri Dominion:
High elves: Pretty much despised after Skyrim and The Thalmor gave them a bad name
Wood elves: Meh
Kajhit: Say it with me now, who dosen't love at least one of the beast races?
Imperials: Apparently Molag Bal owns the soul of the entire race now or something so they are out.