Thanks.
2 )Removing the glacier section is compulsory.
1 ) T6 is a minimum since there is no visible path and you have to climb some parts (and most important : you have to downclimb it after).
The part that leads from the end of the "safe" section to Les Sonnailles is without any visible path. There are only cairns sometimes.
In our opinion, there shoudn't be any mountaineering track on OSM as many apps use OSM without showing the tags.
The 2 rescues that involved using an helicopter and severe injuries happened because beginners hikers followed Maps.me and OfflineMaps ....

Just have a look at the Vanoise area, out of the hundreds easy mountaineering routes, there were only 2 trails on OSM : Rechasse and Chasseforet.