Views/contextual etc. border radius are very different

For example on the view page you can get up to 4 different border radius on elements:

ul.secondary li a {border-radius: 7px;} // theme seven
.js .dropbutton-widget {border-radius: 5px;} //theme seven
.form-actions .button {border-radius: 3px;} //theme seven
.button { border-radius: 20px;} //theme seven

And thats only in the Seven theme.
Contextual link has a border radius of 4, for example.

Should we make less difference in border radius for the elements in admin part (in seven theme at least) ?
For example to make most of the form elements border-radius: 4-5px ?