It is short, has a crank-up roof like a regular tent camper, and has a slide-out bed with partial hard sides. This allows real windows to be used, and provides a bit more of a secure feeling (from critters). The canvas upper portion is much easier to work with than hard sides, and saves some weight.
There is a queen bed in the slide-out, and four feet between it and the door when open. The door is my favorite Coleman-style (set in place, not a half door). The slide-out is high enough to clear the propane tank on the tongue, and there is lots of storage under the bed that is accessible from outside (not shown).
Here are the first rough drafts: