I would argue that the model S/X should be updated for their respective costs; They pretty much sell a 6 year old interior that was "space age" at the time. Since then their have been minor interior/exterior and looks extremely dated as the competition has "caught" up and the cheaper models surpass it. The only main changes to the car have been better battery and performance, the latter doesn't improve the day to day experience of the car.

When your spending 100k on a car you expect Mercedes type of luxury. Previously, Tesla didn't have to compete on that because the Model S/X were ahead of its time an proof of concept cars, with the release of Model 3/Y there is no reason to have one, unless you need the additional size and want to have an electric vehicle on principle.