Have you considered a more formal "temporary" dinette set up?
The reason I purchased a shell is because of the flexibility it offers. There have been times where I have easily had four or five persons inside at the same time and everyone was comfortable. A few of those times have included other FWC owners with dinettes who stated, "it would just be easier for us to eat in here," in my camper.
My ultimate goal is to discover a system where I have a series of small parts that take up very little room. These same parts can be quickly and easily transformed into a table or other useful area.
Same with us.. we built a big bench across the front of the camper (big ole storage box as well) and basically have seating on all 3 sides. Can sit 5 or 6 around removable table. Also made a slide out lower bunk for an extra space to sleep when needed. People are always shocked how big our camper feels because its not so full.. (we did add furnace, and 2 burner cook top but decided against a sink and water tank)