Excellent, excellent points, Steve.
Always nice to have a cheerleader. Do you have pom-poms to go with the outfit? (You aren't Jonathan Cohen, are you? He's famous for short, content-free, LN-cheerleading observations at the Ed Forum.)
As I think about this, and not intending to portray Oswald as an Eagle Scout:
1. The passage from Priscella Johnson's book is suspect at best. She "bonded" with Marina to an extent that was "just a bit" odd. Marina's WC and HSCA testimonies were not this dramatic. She described Oswald as a "good family man" who helped around the house and was a loving father. Yes, she said that he hit her and that he sometimes went into a state where he seemed like a stranger and became angry over trifles. On the other hand, Marina admitted that she was sometimes to blame, and observers of the couple said she was very sharp-tongued and went so far as impugning his manhood in public.
2. Robert Oswald and John Pic bailed out of the home at their earliest opportunity, which is exactly what my siblings did. They did not receive the full Marguerite treatment. Their childhoods were bad enough, but not the chaos of Oswald's.
3. Did Oswald have a significant history of violence, bullying or anything of the sort in school? Not really. One notable fight, but no indication of an out-of-control anger. Did he torture animals, anything like that? No. While he was truant, he went to the zoo and rode the subway; he didn't join a gang or otherwise wreak havoc. A social worker described "a rather pleasant, appealing quality about this emotionally starved, affectionless youngster which grows as one speaks to him."
4. The Marine incidents are closer to tomfoolery than anything suggestive of a serious problem. Was he a constant problem, detested by his superiors and fellow Marines? No.
5. Did he exhibit anything like violence during his time in Russia? No, he was generally well-liked, had friends and girlfriends. Lazy at work, but not a disciplinary problem.
6. When fired from jobs, did he become irate and threaten retribution? No, he was quite passive. Ditto in his encounter with Carlos Bringuier ("Go ahead, Carlos, hit me"). Ditto when he was sandbagged on the radio with the surprise revelation that he had defected to Russia.
7. The night before the JFKA, did he become angry and abusive when Marina rebuffed him? No. She said he was upset but not angry, and he went to bed early. She accepted his excuse that he had come to Irving to try to make peace after their tiff on the phone.
It seems to me that the main aspects of Oswald's personality were (1) he knew he was intelligent and could have done more than he would ever be able to do with his lack of education and opportunity, which had to be extremely frustrating; (2) he was idealistic and thought he had world-changing ideas if only he had a forum to express them; (3) he wanted to be, and thought he should be, taken seriously and placed in an important position; and (4) he had a very big chip on his shoulder in regard to all forms of authority and derived enjoyment from thumbing his nose. By the time of the JFKA, his big hopes and big ideas had hit rock bottom.
The willingness to simply leave his young family to fend for themselves, as he was apparently willing to do with both the Walker attempt and JFKA, is extremely puzzling since Marina and everyone who knew him emphaiszed his love for his children. It's a complex picture, but I think it's overly simplistic to try to portray Oswald as some evil character and the JFKA as the natural consequence of who he was. It makes the LN narrative more compelling, but I don't think it's the reality. I find the Walker attempt and the JFKA puzzling precisely because of who he was.