I tend to agree that the Tesla Model S may fall short as a luxury sedan when compared to Audi, BMW or Lexus luxury models, but I think there is a more interesting comparison. As a sport sedan, compared to a Honda Accord EX or equivalent in the $35000 price range, the Tesla Model S is quite a lot of car for your dollar.
Consider the 160 mile base version of the Model S. This is basically the same car the Signature and Performance buyers are getting, albeit without the range or thoroughbred powertrain. Statically on the street, or even dynamically when driving the wife and cubs around town, it has the same head turning style and coolness, and all the same technology appointments in terms of EV powertrain, dashboard and remote access.
As far as EVs go, a 160 mile battery vs 85-100 miles of range of other models is really quite decent, and just enough to perform useful medium single day trips. While there is increased range anxiety vs the very comfortable 265-300 miles, a 160 mile battery has enough range for a 200 mile roundtrip with minor planning/inconvenience. That is, 100 miles to destination charger, taking the bus to CBD or catching a ride or charge with friends, then 100 miles back.
Regarding thoughts about simplicity-of-interior, for the most part I think buttons in cars are overused as a form of interior styling. In terms of exposing functionality, I find having many buttons decreases accessibility. I tend not to interact with modern dashes as the climate control generally manages things well, windows have dedicated buttons, and the sunroof is moved at the start & end of trips. The main thing I do interact with is the GPS (while juggling the iPhone for traffic info), and the Model S 17" screen looks to be game changing. If we follow the technology trends, the future of car interiors is minimalist wrt buttons, replaced by large displays and voice control as we see more ubiquitous car 'intelligence'.
Back to points about getting a lot of car for your dollar. Consider for $58000 you can get a 160 mile battery with pano roof, leather interior, air suspension and a 17" touch panel with technology package. 6.5s 0-60 is very competitive in this space. The price can be arbitrarily broken down to: $38000 car, $10000 prepaid gas, and $10000 early adopter tax which is funding battery research and bootstrapping a silicon valley auto company (awesome).
Even the Performance option is pretty good value. Consider for a moment that we remove the 300 mile battery requirement for the Performance model. Think a Gen3 with 160 mile range with performance option for an additional $15000. That's really not that unreasonable compared to what you pay when bumping the horsepower specs on a base Lexus, for a car with sub-5s 0-60! I think we'd see people splurging on Performance with 160 mile batteries, because there is value in what is being offered. The value is just less once you have to eat +$20000 for 300 miles of battery research, and there is a line somewhere in the $50k-$70k range that causes many to fail the reality check when considering the utility vs luxury features of a car.
So, for those of us tippy toeing into the "driver's car" culture, who are considering foregoing an upgrade to a low/mid-spec'ed BMW or Lexus from our Fords and Toyotas. Going EV with Tesla Model S - there is a lot to be excited about