Every respected dock out there (docky, awn, cairo dock) has these 2 important features that I really consider a must:

1. The ability to re-size them (someone may like smaller or bigger icons than the default ones)
   
2. The ability to change their position (bottom, left, right)
   

In Unity (which let's face it, is a dock) I heard that it will not be possible even in the long run to have these features implemented.

In my opinion Ubuntu is reinventing the wheel here, because so far Unity doesn't offer a thing more than, for example docky (they are offering even less) and they are doing it the wrong way by not including some simple and very necessary options that I think everybody wants, that's why they are present in the other docks.

In Mac OS X, the Apple logo is in the left, the min, max, close buttons are on the left, but still you can resize and position your dock wherever you want.

So again, my question is:
Is there any really plausible explanation why unity will not include these simple features?