Some great ideas above, here are some additional ones:
Truth behind Princess Diana's Death
Who sits atop of the global control pyramid? Humans? ET's? and what is their agenda?
Christ consciousness, lots of material showing this person/consciousness/story has been seen several times in the past long before the christian version, Dionysus is one example. What is the source of this person/consciousness/story?
ET's found in the very low levels of Area51 - Can we target them specifically and try and get more data? Who are they? What is their agenda? They seem to be very powerful in terms of their mental ability as they can block remote viewers at will. Descriptions resemble a reptilian type of person, where they bio-engineered to just protect very sensitive locations? or are they a genuine species? If they are who are they and what are they doing here?
Just a few of the ones I ponder from time to time.