Moving from old 19 year design to new responsive design. Having a challenge (lots of extra time involved) because current "design window" is till at width of older site width. Difficult to get entire content for wider options on this narrow page. Doesn't reflect design for responsive pages. Would be great if design window was wider, and then once content was entered, could use View Preview page to see that it would look like, and from there make viewing windows smaller or larger to see what it would look like on different size screens. iphone app works great. Just find myself "experimenting' with format of content instead of just adding in content. This older and narrow design window, based on what I have done so far, and i'm a 10 year veteran of the system, will increase my time to market in a roll over of at least 300%.