You ignored the most likely scenario, Q+ means a group of the Q group. We had pretty much already decided that it was either group input, or different group members posting as the legitimate Q. When there was input from more than one in the group in a particular drop, the signature was Q+. Some have mistakenly said it means GEOTUS, but I don't think that's correct. I recall that the GEOTUS posts in the drops, didn't have a Q signature. No signature, but correct trip code, etc. Later confirmed by Q. He said, he was speaking directly to you, meaning POTUS was. Also, the drops that said WRWY.