7. The Klingons Will Appear
The Klingons are the warrior race that the Federation always had an uneasy relationship with. They've been allies, crew-mates even in the Next Generation's case of Commander Worf, but they have also gone to war with each other. Their relationship to the Federation in the rebooted universe has not been established and given that the first film destroyed the Vulcan homeworld, we have some room to introduce another of the key alien races from the Trek universe. While fans would love to see practically any of the main species introduced in Into Darkness, fans undoubtedly favour the Klingons if given the choice. They wouldn't even need to put too much work into creating them, seeing as they have already been redesigned for Abrams' universe, only the scene they featured in was cut from the film. Nero escapes a Klingon prison close to the start of the film and their omission actually helps the possibility of them popping up in the sequel. They're ready to roll out, so why not use them?