fwiw, the reason why the moonroof wasn't available for the first couple of years is that the DOT rules require it to have metal supports. The rest of the world was getting them with the CFRP roofs which are actually stronger. I wasn't aware that they made the entire roof out of metal for the US...that would make it less strong, IMHO. In reality, BMW had said in their original press release for the US that the moonroof would be standard, and personally, I preferred it not be, so for me at least, that was a good thing when they lost their request from the DOT or NHTSA, whichever! Similar hassle with the laser highbeams...it appears that recently they may have allowed the anti-dazzle functionality the original ones had maybe 4-5 years ago in the rest of the world on other models.
2011 535i x-drive GT, 2014 i3 BEV
Soon (hopefully!) A 2021 X5 45e will replace the above