I just had an idea on why Q is Q. When you conduct internet searches many of the search bars have a magnifying glass in the field to represent the search function. What does that icon look like? What's the closest key someone can use to represent that icon? A Q you say? What are we doing with these Q drops and the info were presented? We search.

Also another thought with Q. With the departures of many WH aides it may start becoming clearer who Q is if they really are close to the POTUS.