Thanks Katherine for coming to the conversation and late is better than never :)
Although I can appreciate the value of using the name Bourgogne, because that region is now in France, and it can add some consistency and perhaps make profiles easier to find, I think we also have to keep in mind the overall Wikitree naming standards, which are to use the name that the people themselves might have used.
I know that's difficult with many pre-1500 profiles, but I think the decision reached from this G2G discussion to use 'Burgunden' for this group of profiles was the correct one, given they were a Germanic tribe, and probably didn't rule the area we now know as Burgundy or Bourgogne.
Even with the later rules of Burgundy, using the same name can be confusing because they were from different families. The Dukes of Burgundy were from the French royal Capet family and after that dynasty died out, were inherited by the Valois dynasty, but the Counts or Counts Palatine of Burgundy were from a totally different dynasty (Ivrea, I think). Perhaps that's why it is better to use the dynastic name, rather than the territorial name for the Last Name at Birth (LNAB)?
Even more confusing is the use of Bourgogne as the LNAB for some of the rulers of Castile and Portugal, which although technically correct because they did descend from those dynasties, is imposing a patriarchal naming pattern on what was essentially a matriarchal descent.
I can also appreciate that having a consistent name is a way of avoiding people creating duplicates, but recent changes to the import of gedcoms and the requirement to have a pre-1500 badge has mostly stopped the creation of duplicates, at least in pre-1500 profiles. I think this means that we can use names that better reflect the real situation of the times, rather than perhaps using a name solely to make a profile easier to find.