Quick photoshop of the top bezel being slightly thinner. It's still thicker than the sidewalls.
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NEVER degrade a decent keyboard design with your own deranged choices. If you don't like it who cares, walk away.
Since you're so ready to offer your own editings here, why not change Leonardo's da Vinci's Mona Lisa or even Johannes Vermeer's Girl with a Pearl Earring as well?
There will always be wannabes who think their interpretations of GREAT Art is always superior to the original artist's, in this instance you will always fail when trying to change any of their original work.
Leave it as is because it's perfect to those who appreciate any unique keyboards made by LZ, a true artist in every sense of the word. I will never try to change his mind on how to design any keyboard, since my own personal tastes change every year but his designs remain eternal and loved by all.