As we all know about the age verification system which makes it hard for us to communicate, I think we should add some more emoji's to the game for both serving and chatting with customers.
For chefs, I think we should add emojis like "🍩", to acknowledge people if they want dessert, etc.
For customer specifically at shifts (MRs), I think we should add custom stickers based on what we're going to order. So if they want a food or anything, they can click it on the menu and the requested item will pop up as a message above their head with the name so they don't make it confusing.
As a chef, I think it's kinda hard to communicate with MR+'s when it's about age verification system. I think this is kind of a big feature so I understand if this isn't added to the game later, I'm not complaining though, I just think that this would be a greater feature pairing it with our communication system.
I don't know if this was already suggested but I think the food picking one was original.