I would agree. It gets difficult sometimes to implement a design from a beautiful looking mockup. Mainly because the design does not take into account most of t

I would agree. It gets difficult sometimes to implement a design from a beautiful looking mockup. Mainly because the design does not take into account most of the software use-cases. Then we go back to the drawing board again. Which is sort of why I think designer who can implement design (in HTML/CSS/JS or iOS/Android) is ideal, as they are much more likely to have that sort of "product architecture" thought process; and being as closed as possible to the code which means it becomes easier to adapt the design. Personally like Ryan Singer's approach to designing as he jumps back and fourth between HTML and Photoshop (https://vimeo.com/16814487 https://vimeo.com/16814487), the design gets much closer to reality.