They managed to get the look down from the general Vault-Tec attire, power armor, Mr. Handy, ghoul, and other bits & bobs. Only things missing from the trailer would be the typical remnants of the 1950's propaganda in this alternate universe of "if the bomb were dropped". And Nuka Cola, of course.
All the same, everything looks promising. At least with the Fallout series, there are generally canonical ideas and broad imagery over timelines. Hopefully the tale the series tells keeps to t