fire extinguishers easy to grab
air collection hood that covers all burners
quiet fan to remove air directly out of the building with no turns
task lighting shielded to people's eyes yet shines brightly on task from the front towards the work
light switches that when everything is off are in the downward position
a large round clock with large easy to read Arabic numerals and a clear large numbered digital one also.
wall decorations of useful charts
strong refrigerator magnets
multi colored spin off gama seal lids for 5 gallon buckets
large clear labels for where things go back possible pictures
slide in plastic sleeve sheets for wall or refrigerator for people or food replenish lists
Basic recipes for a crowd in hard plastic sealed such as how to make the large coffee pot for 25 or 50 people
a wall for various size canning jars with fence to hold them in
Large Message center / individual mailbox center. If the boxes are large enough then small items such as glasses or sweaters that are found around can be returned to people this way.
Have you thought of putting regular hot cold water handles to the left and right of the multi temperature hand held faucet?
For a kitchen for many people possibly check out commercial kitchens. They may have a separate sink dedicated to handwashing. Also if seven people are working in a kitchen then three sinks would not be too many. Also a work area where one can peal potatos sitting down or work if in wheel chair or to reach if young. Also a big fan of not having to carry the huge pot of boiling water across the kitchen to the sink to drain pasta. Along with this another thing grandma's do that make me faint is include a sturdy step stool or for sure 89 year old grandma will be getting the 10 pound glass punch bowl filled with 10 pounds of glass punch cups out of the top shelf while standing on a folding chair.
Not bad considering I do not cook or even ever make a cup of coffee.
I enjoyed your post especially the picture of the drying rack.
I am a big fan of all white, boring dishes so everything always matches, especially Corellware.