The CEO of our company has a Tesla Sportster ... for more than a few years now (number 105 as I recall) and likes it a lot.
The new Model S is an awesome looking car - it has set the new standard for what an all-electric luxury car can be capable of. Makes the Prius and Leaf look like toys.
(BTW, I have to be careful how much I can say about the Tesla S due to NDA reasons.)
The S is an all-Tesla design, unlike the roadster where Lotus was involved. Thus, for a "first design", it is a remarkable achievement. I have three friends with them now, and they are all still pretty ecstatic about it and have not experienced any problems.
I am sure this car will have teething pains, so while I am interested in one, I will give it another year or two before I consider getting one - my current 2003 M45 is still running fine too, so no reason to be hasty!
Yes, the 17" display is truly remarkable - has to be seen to be appreciated! Although there were lots of concerns about its use in the car - particularly for people who start tinkering to try to show movies on it or something stupid like that. However, it has turned out to be a major selling point.
Yes, it is "electronics", with the head-unit and communications equipment behind it, so will be prone to some of the kinds of glitches that vehicle electronic systems in other cars experience in this day and age.
No, the design and code of the electronics behind the panel was not rushed to market. The engineers who worked on the project were under stress to meet time deadlines, of course, but did not want the car to fail to meet safety guidelines. The panel underwent a lot of scrutiny since it was so innovative and likely to have NHTSA being
more than a simple quick look, so they took a lot of care to get it right.
Yes, the car was released late to market for the usual design and production reasons. I am sure that Elon had some interesting words to say to his staff about the delays

, but he knows as well as anybody about the risks of getting it wrong!
Z