Hallo BvLJg,

Thanks for the reply. Maybe the whole route was graded in OSM on a too easy grade. Furthermore people themselves are responsible for their own safety. OSM is not perfect but also not responsible. (the corrects tags is the way too go, not removing paths). The rest is not relevant.

For dangerous aspects there are tags in OSM. (OSM does not remove hikes were people died due to rockfall) Like I said T5/T6 can already have climbing sections. (see sac-scale wiki) 

Splitting it up and grading it correctly is the best we can do.
If you dont want to do that than that is fine of course. But maybe you would like to do that? Otherwise I will do that. That gets us back to the original question. 

1) How would you grade the different sections ? (Than we know/see of we have a difference of opinion)
2) Removing the glacier section is fine.
