It just occurred to me, Mike.
If you put it back together fairly similar to how ER had done the interior, then you make the Sink only about a foot and a half off of the floor, raise up the seat to about that same height, then you can make it so the bed spreads across the entire thing (over the sink) when sleeping, but still you have a work about cook area too. Of course you would have to sit to do the cooking and washing, but really this is not meant to be as comfortable as a Unicat, rather to be functional, yes?
I realize that will cut down on the storage area, but if you set up the bed with more storage under it and no shower...
OR... Think about those tent camper trailers that have the kitchen hinged and can fold in half. Then you can fold the kitchen down into the isle between the counters and the bed thus allowing a double wide bed again?
I dono, maybe I am nuts. At least this would give you more storage, and you could still stand to use the sink et al.
: )