So my best theory to date has been that the killer was someone who knew the family and who had an obsession for Patsy. It still seemed far-fetched, but stranger things have happened. I considered the killer to be intelligent and to have hated JonBenet - been jealous of JonBenet because of the obsession with Patsy
That's been part of my best theory to date also, that (1) Agent X was obsessed PATSY a hating obsession, because she'd been a beauty queen and he's been accused of pride, hates it in others, assumes women are too proud whether they're beauty queens or not, and (2) I agree that he was jealous of JonBenet according to the Patricia Letters, and (3) a big reason, besides a womens' intuition similar to Jayelles', that I'm so sure of this hunch is that I've heard there really is a covert person who blows his cover by ranting about his mother liking his youngest brother best, so he felt an insatiable need to be favorite, and youngest brother's wife being a beauty queen/concert pianist, that "stars" like that need humbling, but he's often self-contradicting and tries to explain away his sabotages of careers by victim blaming such as that they don't exude enough confidence. Having ranted and raved about their "big head", pride.
One big thing about the RN, this talebearer in religion circles gets religious mail addressed to husbands only, which most wives probably reason is just church sexism quirkiness. So I think that's why "and Mrs." on the RN was crossed out. To make sure his hatred of a wife would be more noticed!!!!!!!!!!
In the Patricia Letters, she quotes someone who sounds "not of this world". That figures. Most religions try to ignore Biblical predictions of just such a person as too depressing, though they're supposed to sound the alarm. His coming is the working of Satan, 2nd Thessalonians 2, and all who believe his heresies and slanders (he's a/k/a the Re 12 accuser of the brethren and of a woman in the time of flying) will be allowed to "perish", having "strong delusions" the translators think are from God. Probably a better translation would be God allows it, right?
Anyway, he's an expert forger, and I may know a couple of people who've lost investment money due to a forgery, even their lawyers seeming to have been bought out. Nobody can have any secrets from this creature, Ezekiel 3:28 if I remember correctly, so he must be a spy, would know oil people and other sources if he wants to bribe whole cities. Famous chapter 14 of Isaiah says his to-be-slain followers deal with cities and new buildings. (As bribes to illegally discriminate against those he hates?) I agree with your best theory whole-heartedly.
The way this whole thing was planned out plays people against each other, makes John unemployable and the whole family under public seige, "humbles" them, etc., some of his trademarks, all in one fell swoop.
That was the first post, now to read the rest of the thread.