When I took delivery of my RWD LR 3 just over a year ago, it looked perfect to me. I saw no "panel gap" issues. When I moved here I had the car shipped over, and when it arrived a lady at the shipper walked out to the car with me and we inspected it together (for possible damage during shipping). Other than being filthy, which was expected, it looked perfect to me. As we chatted about Tesla in general, she told me she wouldn't buy a Tesla because of the terrible fit of the panels. She pointed out to me where some panel gaps were larger than others.
I could see the differences she was showing me, and you know what? It still looked perfect to me. Yes, the gaps between panels are not exactly uniform. But none are too big or too small. IMO, that is. I told her that, yes, I could see what she was pointing to. And then I told her about charging the car with free solar power rather than burning the environmental disaster that is gasoline. I told her about zero to sixty in just over 5 seconds with no shifting. I told her about having the industry's most advanced autopilot (admittedly a misnomer, but an amazing feature). I told her about the five star safety rating in every category. And then I told her that I really didn't care at all if the variation in panel gap width was greater than it is in some other car. I also told her about the issues around the phone-as-key and my opinion that the glass roof was a bad idea, and that I had to pay for the upgraded interior that I didn't want (though I like it now) but had to pay for to get the car when I did, and that if I'd known I was going to move here I would not have gotten the long-range battery.
So, all-in-all, the panels on my car are perfect. Not precisely uniform, but perfect nonetheless.