What was the Burgundian model to which the Holy Roman Empire was reformed under Maximilian I?

Answer

I would not call it completely Burgundian, partly because that Burgundian Empire was a very strong personal union, albeit spread over two unconnected regions (les pays de par-deçà in the North and les pays de par-delà in the South). while the Holy Roman Empire was just forming one geographical entity, ruled by a vast number of different monarchs and administrators. But both managed to strengthen a unity relatively successfully, and Maximilian I did look at some elements of the unification policy of Philip the Good, in particular, his wife’s grandfather:

• centralization of a number of institutions, including for the highest jurisdiction (Grand Council in Burgundy, Reichskammergericht in the Holy Roman Empire)
• more regular meetings of a central representative body (State General in Burgundy, Reich Regiment in the Holy Roman Empire – although the latter did not last long)
• uniformization of tax systems
• regional administrative organization in larger wholes (the Pays de Par-Deça/Dela and the Rijkskreitsen), so that it was certainly NOT about the formation of a central state.

One of the most important decisions of the Reichstag in Worms was the conclusion of a mutual peace, while the Burgundian Empire, for example, never really experienced internal feuds but rather urban revolts.