Will Enlil be in favor of human annihilation, or short of that, complete dominance of humanity by autonomous robot control, which is something else the Pleiadians say is in the works?

The latter is more likely at this point. This will be no better for human than would be the case with annihilation, for it will extinguish the free will enterprise for all practical purposes. This is the end reward for the Arcturian's robotic beings, the alien Greys, to have their dominion and to give them a plaything and a training ground to simulate what they have observed in their greater partners coming in and dominating a world and its beings. This they enjoyed and would like to have that same stature and would be quite content to continue the exercise with greater and greater levels of authority and control. They themselves have been frustrated many times by the human unpredictability and fierce desire for independence and would have great enjoyment in seeing them constrained further, particularly under their personal domination.