Well lets just close by saying Christ said he was leaving the sign of Jonah as the only sign he would leave for a foolish generation who was always seeking after signs. To extend you an olive branch, the cloth could be a part of that same sign...and empty tomb and empty burial cloth with Christ leaving that image of himself as a sort of “Kilroy was here” graffiti mark upon the whole of matter. The thought that Christ might do that as a sort of “hey let’s leave them wondering” gesture does stimulate the humor imp in me!
Well yes, actually. And just like the signs He performed and parables He taught during His earthly ministry, some folks will "get it" ... and some won't.
And short of THE END, we'll never really know if the Shroud is legit or not. I don't think anyone will ever conclusively prove it to be a fake, or conclusively prove it genuine.