Who said there isn't any new evidence to be found?
Here's Oswald's sack in the Sniper's nest.
Btw I can't find the poster who originally found this groundbreaking evidence but if it was you, tell me and I will credit you!
EDIT
JohnM
Studebaker, in his testimony, references a photograph ( exhibit F) where he had drawn in - dotted lines - the outline of the bag, showing where he found it,
on the floor, in the sniper's nest, near the pipes.
Sadly, no photograph was taken of the bag in this location.
So, are you saying the bag was placed on top of the - three high - stack of boxes, and then photographed, inadvertently?