From what I understand, basic attributes are determined by race in Skyrim. This means everyone of the same race will have the same running speed, have the same intelligence, the same agility, etc. This IS streamlined and really creates a lack of definition and realism in any character. In previous TES games, you could actually make your character be an idiot (or a genius) using the attributes and skills system. In Skyrim, all you can do is imagine your character is smart, or fast, or anything else like that. That is NOT what an RPG is. Because in the end, the game isn't going to care what you imagine your character to be- as far as it's concerned you are equally as smart, as fast, as strong (exception being stamina & it's affect on encumbrance) as everybody else.
There's a difference between imagining your character is a good climber and actually having the game recognize and incorporate that into the game world, and this is where Skyrim ultimately fails the RPG aspect.
Overall I agree with you but there is a few things you have gotten wrong.
There is no such thing as Intelligence or agility that I can see in skyrim, tho this issue will be clearer when the construction set comes out. The only racial stats are Height and Weight, you then get racial bonuses which are more just resistances then anything else and one a day powers. All races start with 100/100/100 except altmer who start with 150 magicka. Height determines speed (except khajiit who have a speed bonus) and attack damage, weight determines defense against knock back/stun/knock down effects. Statistically wise there isn't really anything else that separates the races out all that much.
Not sure that Intelligence had any real effect noticeable effect in previous games, tho it did have some effects in Fallout 3 with extra speech options. Other games have made more of intelligence, for some it helps determine the amount of skill bonuses you can get at level-up (try neverwinter nights as one example), so you could have an intelligent character, but that didn't necessarily make you a great speaker either, in that way it was more versatile.