I agree with your explanation, but One thing I am learning in my short tesla journey, nothing is difficult for Tesla.Maar het zal voor Tesla productie medewerkers ook niet te doen zijn om om de paar weken wijzigingen door te voeren.
No one would have thought dropping USS on a car will be easy. In fact I was looking forward to an upgrade from my current car which only has USS in the rear and having USS all around on my new car, so my wife can park easily. But Nooooo.... Tesla doesn't like USS anymore, so I will have to continue to park my New Big car without any sensors at all... madness...
But did this result in mass cancellation of orders at Tesla, I don't think so.
Therefore I believe that whether PC57 has new suspension or PC63 has new seats, I don't think anyone is going to cancel their order for it.
I am now more worried about the hold up of ships not unloading. Which means my order will get pushed to 2023.
Another exciting (not) day in the world of future Tesla ownership. Hehehehe