In our 1992 conversion RVan the riser (roof bulge) over the "cockpit" was occupied by the old analog TV flanked by 4 small shelves with flap doors for VCR and storage for tapes, I guess. When the TV was removed (to be replaced by a surface mount LED LCD) we found all this room being wasted. We unscrewed the 4 "boxes" and unhooked all the DC hookups. There is a huge 52" x 48" open shelf now which is, I believe, the original roof of the van. I am going to put down a liner and use this area mostly for bedding and other light weight items.
I seem to keep finding places to put things more efficiently. Like the plastic stack between the cockpit chairs. I think that is part of the fun for me yet. I dont rearrange furniture at home, just in my RVan.