Luxembourg seemed only to have existed for him as one of his territories to be defended against the Burgundian expansion.
Luxembourg's position on the western border of the Empire had always resulted in a very intense relationship with the western neighbours, especially the Capetians and later Valois, which was probably tighter than that to pretenders to the German throne.
In the case of Luxembourg, where the leading counts were French speaking, but most of their present entourage and supporting noblemen using the Germanic dialect, some democratic rule of majority must have played a role, which seems however quite surprising for the Middle Ages.