Presume binding channel is about 1.5mm to 2mm deep and around 5mm high at 90 degrees to top face of body?
Removal of maple veneer probably removed 1.00mm to 1.5mm thickness from the top.
Proposed rounded edges should take more off the sides in the 90 degree plane and not reduce overall thickness. By adding another layer of veneer on top that requires lots more work and most likely fresh binding to protect edges where it sits on top of sides. Sure it could look schmick but will take more care and patience.
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