Yep, I would include three of these... one for my Kitchenaid, another for the Instantpot and another for the airfryer... adding this to future kitchen ideas!
Mdf would wear quickly in this application. I would check out Haffele and Richelieu. What you have drawn is not dissimilar from the mechanism used to store and retrieve/use kitchen mixers.
Example here
You could even go with a lift shelf like this one made for a mixer.
Yes! Very similar to modern mixer lift contraptions.