Altmer
Argonian
Bosmer
Breton
Dunmer
Imperial
Khajiit
Nord
Orc
Redguard
Probably not quite as drastic an overhaul as what other people have in mind, but I still like this.
There is a way, the trick is to make it work specifically for Bosmer characters and not ruin the Quick Draw perk. I think it may be possible to adjust the Quick Draw by attaching a script to it - so it works as before for all races except Bosmer, for whom it gives more bow damage or something like that (because they start with Quick Draw already, so to say).
I'm going to dissent from the rest and get rid of once-a-day abilities. I like my racial bonuses to be passive, and I think they should include boons and penalties.
Altmer:+50 Magicka, +10% Magicka Regen, -25% Magic Resistance.
Dunmer: +50% Fire Resistance, -25%Trade Prices, -25% Bribe/Persuade Chance
Bosmer: +25 Stamina, +25% Health/Stamina Regen when cannibalize, -50% Persuade/Bribe/Reputation after cannibalization.
Orc: +50 Health, +25 Stamina, -25 Magicka, -10% Magicka Regen
Nord: +50% Frost Resistance, +25 Stamina, -25% Fire Resistance
Breton: +25% Magic Resistance, +50% Magicka Regen, -25 Stamina
Imperial: +25% Persuade/Bribe/Prices/Reputation, +25 Magicka, +25 Stamina, -25 Health
Redguard: +25 Health, +25 Stamina, +10% Stamina Regen, -50% Magicka Regen, -10 Magicka
Khajiit: +25 Unarmed Damage, +25 Stamina, -50% Bribe/Persuade/Price/Reputation
Argonian: Waterbreathing, +50% Posion/Disease Resistance, +10% Health Regen, +10% Stamina Regen, -50% Frost Resistance
I like the Khajiit one. It gives more of an incentive to use the power. Another power that could be given would be a buff to damage when you enter sneak. Basically like the Shadowcloak ability but instead of invisibility you would get an attack boost while you were sneaking, for the rest of that day.
weakness to magicka on the high-elves. I don't think exp bonus would be better, because I use the uncapper already for that. What I would like is change the speed to lower on highelves and higher on wood elves. Altmer have traditionally had a speed penalty, so it doesn't make sense that they are the fastest runners