What is it with this obsession of yours with conspiracies, you claim don't exist?
Are all those self-serving arguments why a conspiracy, in your opinion, could or would not have worked, supposed to somehow justify the conclusion that Oswald was a lone gun man?
You claim to be an ex-lawyer, so you should understand that the best way to disprove a conspiracy is by presenting a solid, conclusive case against Oswald.
So, why not do that instead of constantly arguing that a conspiracy is improbable or even impossible?
You're completely missing the point, the OP is simply describing the ineptness of the commonly held conspiracy theories and if you and your fellow conspiracy believers want to solve the case then you must discover new and more believable alternatives.
For instance as most LNers have told you,
1) A frontal sniper is ridiculous.
2) Oswald roaming around the building before 12:30 is crazy
3) Having Oswald escaping and possibly blabbing is silly
4) Planting a war surplus rifle(which was actually very accurate) when other rifles could have been planted is insane
5) Having to alter a vast amount of evidence to fit a different conspiratorial outcome is pure lunacy.
ETC. ETC....
JohnM