3. The power tailgate doesn't go high enough. My wife is 5'5" and she bumps her head on it! One owner who is six foot assured me he's more than comfortable with the height his Tesla's tailgate goes. I've tried reprogramming the height as instructed and it never goes higher than a certain level. Approaching the physical limit of the tailgate height you can't program that height any more and the tailgate also refused to close by itself. That could be normal - I don't know.
It ought to power-open up to the full height that you can open it manually, subject to how you have programmed it.
The power operation does get grumpy under some circumstances (including I think being left open for a long time). Closing it manually resets that.