Dave I'm just curious about 2 things. First how did you get that grainy look in your pics of the cabinet? Is that a feature in SketchUp or are you using another program along with it? Also when you make a drawer or anything for that matter in exploded view, do you have to draw each piece individually or is there a way of breaking apart a model, that I don't know about?
As for the design, I very much prefer the 4 leg layout. Something about the 3 legged version just doesn't look right.
Also I do prefer the inset drawers, with everything else being somewhat flush the overlay drawers look a little awkward. Maybe if you were to bulk up the base a little so that it sticks out about as much as the drawers do at least, it might look a little more uniform.
That said, I am not very familiar with the Arts and Crafts style so I don't know if my suggestions would be pulling the design farther away from the style.