The following article covers in more detail the early history of the nomination of this site. I hadn't previously appreciated that, originally, only 1 village was to be inscribed. When this was changed to become a wider cultural landscape a whole range of other issues emerged!! I don't yet feel I fully understand these
a. There are a lot of "anthropological" concepts/jargon
b. A good understanding of the history and culture of Sulawesi and the wider region is required.
The whole issue of "Indigeneity" and its relationship to/definition by the concept of "World Heritage" as implemented to date is clearly a live issue with implications way beyond Sulawesi (I think of the difficulties faced by the Canadian nomination of Pimachiowin Aki where the indigenous peoples were not comfortable with UNESCO approaches)
I have also read elsewhere (but, for the moment have "lost" the source!!) that, in fact the "Villages" we can see in Toraja land today, are very much a creation of colonial years during which previously scattered families came together to make it easier to deal with the colonial power. Authenticity??
The main World Heritage-related document in this collection of papers starts on page 149http://webdoc.sub.gwdg.de/univerlag/2013/GSCP7_adat.pdf