I agree and disagree if that makes any sense, the x Power has a party piece and it's a belter.
The revisions look good, could they have went further yes.
As you say better tyres, alloys ambient lighting maybe, bit more expensive extras a pan roof, hud.
All would make it more appealing and yes more range.
If you want more range though buy the extended range, in a lot of the reviews the now class it as the pick of the range, faster than the standard car, handles the same and goes further.
There is no getting away from the fact that the x power appeals to a certain demographic and that's who seems to be buying them, I doubt it's tempting many youngish drivers (under 40's)