Argonians -10
Bretons -5
Altmer -10
Imperials -5
Khajiit -5
Nords -5
Redguards -5
Bosmer -5
Obviously I'm not looking for what you think the actual numbers will be but I think based off what we know, all races due to them succeeding from the empire would have a negative base disposition to imperials, except maybe Nords who are royalist ?
Argonians and Dunmer should hate each other more than usual.
I say the PC should be effected by base dispositions for Skyrim. e.g. you pick a dunmer: be prepared to charm that argonian quest giver to give all the info and/or better quest reward.
I think it should be far more noticeable than in oblivion where the only dispositions that really mattered were http://www.uesp.net/wiki/Oblivion:M%27raaj-Dar and http://www.uesp.net/wiki/Oblivion:Adoring_Fan
I dunno, just something I was thinking about, discuss ?