I did have a look at the mess box type idea but didn't want the fold down door as always have a table to prepare stuff and as the cooker is quite low it would get in the way - hence the doors which then help to hold the wings up.
Also on the campsite was this homemade kitchen. Dutch guy made up a his own flight box. The gas comes out when travelling and pans / bowls in that hole. The cups / glasses slde out and it has kitchen cabinet feet for levelling. Cant remember what it weighed but it was alot!
What someone needs to make is a folding version for those of us with more stuff than space and where a trailer might not be an option. I would buy one certainly, much nicer than the blue fabric monstrosity that counts as our camp kitchen is. We have a bell tent too and I like to keep things looking natural with wood and canvas