I do understand what you're saying, but this does present some technical difficulties. Consider that the ADV Storygames will be getting much more advanced (scripting, exposed identifiers, etc) -- and the gap between what the storygame looks like in the editor and in the viewer is going to get bigger and bigger. The biggest reason for this is what's called Gamestate.
Gamestate refers to everything that's happened since the start of the storygame, from the pages visited to the items attained. There is simply no way to construct a Gamestate inside of the editor -- you can access any page directly, and that would totally throw things off.
The reason that the Viewer/Editor experiene is so close (or, atleast tries to be) inside of the classic editor is because Classic Stories do not use a Gamestate: no matter what page you're on, no matter what time, the link will always take you to a page or end the story.
Perhaps, what might be better, is if you were able to see what Items were on a partuclar page when viewing thatpage in the page editor? I do believe this is an existing FWW suggestion,