I recently have been fortunate enough to also get the set. It's magnificent. My singular complaint is that UN does not well support the documentation necessary for correctly setting the trio. I have had my set serviced by UN (they were not as well cared for as one would want), set to the correct time and purchased reference docs good to 2020.
To set one, you first must know (approximately) when it stopped—the year is not displayed, it must be inferred from the position of the planets, the moon, or other astronomical information—then the reference material, in the case of the planetarium, shows you the position of the planets on 1 January of each year. From there you must forward the watch to the correct month and time. Tedious enough (and I am OCD) that after abandoning winders for my other watches I use the included winder for these.
Oh, the set I purchased was complete. Complete with errata sheets, and red ink cross outs in the manuals. This does not instill confidence when setting that, "you've got it right."
I am fortunate enough to also own the Moonstruck, the Sonata, GMT, and the Freak (mentioned in the thread). I think only the Moonstruck would belong in a reissued set. I love the others, but clearly are not astronomical. Btw, the Moonstruck can also be a pain to set, but easier in that you do not need fear you're in the wrong year.
I have mentioned elsewhere that the earth discs on the Moonstruck and the Tellurium are similar, but being hand painted, differ.