In most situations, ‘vision and concept’ just add bloat and additional clicks required to complete the same tasks as the previous, spartan/utilitarian design did.

A good example of what I’m referring to is the Metro UI of Windows 8; yes it arguably looked ‘prettier’ - but that’s largely subjective and made actually using the device worse, without 3rd party applications to restore the Windows 7 Start Menu functionality.

Sometimes, albeit not always - programmers do end up making pretty efficient UIs.

It's fair in a way though, if someone has invested time and effort into developing a workflow using a tool then the hammer company come and say 'we're talking away the solid handle and replacing it with a soft one then of course you'll be angry.

The worst is when they make things look like bad science fiction by moving everything into awkward places and wasting 90% of my screen with dumb looking polish that does nothing but slow performance and add bugs.

Because you take away their safe space. I went through this with every major Firefox redesign. Then i spend several hours trying to reverse the changes through css.