Wow... I'd have loved to have unit plans like this when I was an estimator... would have made it much more interesting and pleasing to look through all those plans
As far as the way you've approached it, I really enjoy the cutaway as you've rendered it, and still maintained all the appropriate shadows for the lighting as it would occur within the unit. Seeing everything textured and so well proportioned is a pleasure.
I certainly don't see anything I'd change or that you may have missed. I love the idea of having the unit layout done in 3d and then cutaway in this fashion...I've never seen it before... hence the high ratings, well done!