I will address the points you enumerated -- the trick in avoiding the emoji is to type it with a space between each parenthesis and the 8, like this: ( 8 ) -- later.
By Oswald Being Oswald, I simply mean
(1) this was an intelligent but idealistic, frustrated and alienated young guy who was desperate to be taken seriously;
(2) he particularly enjoyed the shock value of being Marxist Me whenever this would have the effect of being shocking, although I do believe he was sincere in his idealistic notions of Marxism;
(3) I believe he was sincere in his defection and sincerely hoped to find recognition as a deep thinker in the USSR;
(4) I think Snyder was a savvy guy who recognized Oswald was basically a mixed-up kid and dealt with him gently (I love Snyder's ironic warning that if Oswald was a Marxist he was going to be a "very lonely guy" in Moscow);
(5) I believe the KGB quickly realized he was a loose cannon and assigned him to a backwater like Minsk where he was unlikely to cause too many problems;
(6) I think he married Marina simply because it would be cool and "Russian" to have such a wife (I know the feeling!);
(7) I think Marina married him for the same reason and was genuinely enthusiastic about escaping the USSR for her notions of America - I just don't see her as a KGB operative at all;
( 8 ) despite what might look to us like the best life he'd ever have in Minsk, he was thoroughly disillusioned with the Soviet system and realized he was not ever going to receive the recognition he thought he deserved;
(9) he now thought he would receive recognition in the U.S. as a returning defector with important insights but found himself still a nobody with nothing but menial jobs;
(10) what might appear to be the suspicious circumstances of his return were simply the USSR being delighted to be rid of this potential problem child and the U.S. being gentle with a mixed-up goofball (in LBJ's famous phrase about Hubert Humphrey as V-P, it was better to have Oswald "inside the U.S. pissing out than outside the U.S. pissing in");
(11) upon his return to the U.S., his marriage absolutely went to hell, even Cuba (his last idealistic hope) rejected him, and he found himself living in a boarding house, rebuffed by his wife, and working at the absolutely most menial of temporary minimum-wage jobs;
(12) then Fate seemingly handed him an opportunity for recognition on a golden platter in the form of the JFK motorcade; and, lastly
(13) he seized the opportunity, which I believe he hoped to maximize with a trial that would be months of Marxist Theater and reveal his political genius.
. . . . . . . .
I just now did a little research and found out that the KGB Higher School in Minsk in 1982 was on Vayskavyy Proezd "near Victory Square."
Scroll down to page 20.
https://www.archives.gov/files/research/jfk/releases/docid-32989481.pdf