Hi SlidePods, I guess we are all different in our needs but having lived in a camper non-stop round Europe for six months I know what I'd want/need.
Basically a copy of the classic Westfalia three cupboard unit but maybe with slidey doors not hinged for access.
So, fridge (top loading, space permitting) on left, cooker and sink on right.
But with the independent flush fitting Smev type hob and sink (not combined) so good use of worktop space independent of use of appliances.
Or even more simple just a Smev sink and then the option to simply pop a stored cartridge cooker on top of the worktop or take outside.
Underneath fresh/waste cans in simple 10litre plastic jerry cans. At least one drawer. Table rail to take the VW table.
Access through the cupboard to the original VW trim panel storage.
Semi-permanent connection using standard VW rail fittings.
A quick connect fused multiplug to connect to the leisure battery directly for fridge efficiency.
That's it really - clean, simple (!)