I do think I understand where you're coming from. You're trying to say that as an artist, the original creator's intent of how the piece was to be perceived/performed/displayed is as good as something can get, as it personifies the original creator's image of what he aspired to create. That, in itself, can be true, I suppose, but others, also being artists, have their own interpretations and visions of ideas and concepts, and those different ideas are what makes some covers great.
You're saying that even though a re-imagining of the concept might improve upon a piece in all aspects, a piece's original form is still as good as it can get. I don't agree with that, as everything can be improved, and nothing is perfect, at least from my point of view. You can still appreciate and identify with the original artists' intent with creating the original piece, but to say that just because it is the original therefore it is better isn't completely fair.