Other than the 4 led 'ambient' lighting a bit of a poor gimmick and the passenger seat height adjust i've not noticed the others at all, and no passenger yet has noticed that!
Oh I did notice the plasticy seat handles on the coupe at the Live event, they really let it down and made me look harder at the quality of the rest but then I bought a 5 door anyway so doesnt have these!
Trouble is to make it light they have to compromise somewhere, if it wasnt light (almost toward modern saloon car weights) it wouldn't have that stunning mpg... Oh