False choice.
And anyway, 'luxury' has always been a moving target. Size, EV range and 0-60 times aside, I think we will always find in the 'S'
- more foam in the seat
- more options. Like air suspension and fancy wheels today
- more expensive materials in the cabin.
- coddling at the service center
- perks. See: free SC use
- first appearance of new technology. Elon said so.
But it is not a false choice, if it is a real comparison many people will make. I would bet quite a few people will be comparing a Performance Model 3 D vs. a Model S... Heck, there are people who will compare base Model 3 and Model S, because there are so few BEV options to choose between.
Do you really think Model S sales hurting from Model 3 (after all, Elon said so), is merely down to confusion? That people prefer to wait for Model 3 simply because they think it is "version 3"? I'm not so sure. I think a lot of people - myself included - are waiting to see if it works for them better than some other BEV. Model 3 is hurting Model S sales in many of these cases. After all, people have upgraded to Model S from a Prius. Such crowd might well consider a Model 3 instead...
Obivously at this state I think it is a matter of opinion and speculation, so we are sure to agree to disagree, but to clarify my position I am not sure any of the things you list matter that much, given that Model S is not a very luxurious car. Unless that changes, of course. Interior comfort and materials remains to be seen. Model 3 might even be better in some regards, given that it is newer and Model S is aging. That big wood on the dash looks very nice IMO. Lack of second screen and hatchback are of course much discussed downsides, so those matter to those for whom they matter - they will not stop a volume success, though, as said.
Wheels are of no consideration, people can get wheels later. I mean, it isn't like Model S/X has a great selection of wheels anyway, they just made the selection smaller - basically turbine variations... Air suspension I wouldn't be surprised if we see on the Model 3 for Performance edition anyway. Perks are not so interesting once the price difference is tens of thousands...
Interior options on Model S/X have gotten only less and less over time... I mean, the problem for Tesla is that Model S hardly is an Audi A8 or an S Class in comforts, even though it has a similar price. Heck, I might consider a Performance D Model 3 rather than a Model S were I in the market for that choice (from any other perspective than the hatchback question)...
This may well be one of the reasons Model S retains the hatchback and Model 3 not. It gives one tangible benefit to the more expensive car, in addition to performance. Other than that, Tesla really would be wise to improve Model S/X considerably to make them more lucrative compared to Model 3. Just anti-selling Model 3 is probably not a good idea going forward...
So, for Tesla's sake, let's really hope they step up Model S/X...