Bringing technologies back from the future ensures that the Federation won't develop their present counterparts
The Klingon Augment Virus is the real reason for the ban on genetic engineering (includes spoilers from SNW 2.2)
The first nine episodes of Discovery are a model for what streaming era Star Trek should have looked like
Giant Spock's skeleton in "Kayshon, His Eyes Uncovered" provides several potentially interesting details of Vulcan anatomy, and possibly a glimpse into their evolutionary history.
