When you cross over you will need guidance. Not many people on earth right now are ready to face the challenge at death because they are buying into the deception story. If you are looking forward to technologies and material things when you die then you will reincarnate to experience just that. But the 3d earth is supposed to be shifting to 4d right? So that means if you reincarnate you will do so on a different planet like say MARS which is being prepared for you by the ELITE physical humans right now that have prepared to survive the changes and want to continue to control the masses as THE GODS.
We don't know for certain about the ETs one way or another so there is no point in speculating. But when our consciousness moves to 5d we will have to be very lucid in order to navigate the dimensions or we might find ourselves in a hellish place. We need help in that respect. So I am guessing that the real beings that are assisting humans are not the ones in metal ships that land. It will be the ones that are true ascended masters that are hanging around long enough to make sure souls are not lost in transition so to speak.