Very creative Robert!
--Expanded counter space; especially with the extension.
--L-shaped kitchen. They could include a stool or two.
--Wider entrance to back bunk b/c you moved the wardrobe.
Nothing to dislike, really, except the shortened awning, as you mentioned.
But I have some concerns the engineers would need to address below ...
--The trailer would not seem to be balanced - too heavy on the driver's side due to the bath, super slide, u-dinette and sofa. How would this effect frame, stability, axles and tire wear, etc?
--The fridge and furnace need to vent. These are right under the bunk and I would be concerned about that.
--The whole trailer will be heavier.
--The super slide-out mechanism will probably increase the overall weight of the trailer.
--The sleeper sofa will increase the overall weight unless you just intended to use the current flip-sofa.
Nice first post.