It is true that Pantheon win a lot thanks to that, but when I'm talking about
customization, I am talking about basic customization.
Example, on Ubuntu you can't change a lot in the top bar, but you should be
able to make basic customizations, like for example moving the Menu Bar/Dock
to the bottom or even to the right. Something basic but something that works
and won't allow the user to make it stop working because of the 1px bar with
70px icon for example.
The real problem is that, for me, every time I use any DE I have to do
something because it isn't never like I would like (and I know that is more
personal than anything else). The DE that I had made the less changes was the
Custom Gnome-Classic DE of Trisquel, when I've only made the bar 1 pixel
smaller in order to have the same size (in the eye), but a full button (since
I use a huge resolution on my monitor, those little bars can be hard to see
and use :S..), a solution for this could be solved for example by seeing the
resolution, if it is superior to 1600 in width then it should be 43px instead
of 44px for example (but once again this is only my opinion and this is why I
started that tread :D).
PS : Thank you a lot for the feedback :D