"1) The Linclon Kennedy was driving in was completely gutted and rebuilt within 48 hours of the assassination. ... Why ? It was crime scene. This has never been explained other than they did not want it to become a curio. That is all well and good but it should have been left in tact until after the investigation. It was not. Thus it is reasonable to state that the crime scene itself was never, ever studied. If Kennedy was hit in the throat from the front there would have been a bullit hole in the seat where he was sitting. Unfortunately we will never know.
2) All the lamposts and signs were changed in Dealy Plaza thus preventing it from becoming possible to recreate the events independent of The Warren Commison's version which was done very shortly after [The next day I believe. ] along with all signs [the one that blocks our view in the Zapruder film was also moved] all manholes were covered over and from what I understand the original plans destroyed. "
It was no ordinary crime scene, the government was terrified that this assassination might mark the beginning of all out war with the soviets, it was a matter of the highest importance that they get to the bottom of this killing asap, millions of lives might depend on it. Couldn't this be the explanation for the gutting of the car, the removal of sign-posts etc? Leave no stone unturned? They couldn't play this one by the book, it wasn't so much a police matter as a matter of national security, to be handled at the highest level by the security forces.
"3) If one views the films and looks at the pictures it is obvious that other people were both filming the motorcade and taking pictures. Not all of these have surfaced. Where are they ? See this image below."
Where are the others who were filming it? Do you have any pictures of this from the zapruder film? The guy in the picture is not holding a video camera but a normal camera, perhaps he was just taking publicity shots for the president. I don't see how this implicates anyone or suggests anything dodgy. The Zapruder film provides more than enough information for an entire computer reconstruction of the events, destroying other films would not have achieved much, it's not like the guy in the picture is facing towards the grassy knoll. If there were a conspiracy surely getting hold of the zapruder film and destroying/hiding it would have been the number one priority rather than desposing of a few photos that are not pointing towards any of the conspiracy 'hot spots'.
I agree with you that these facts will always remain true, I just don't believe that they are particularly important or that they point towards a conspiracy.