It's one of my life-long ambitions to see Everest myself from the ground, not an aeroplane looking down. I think that for many of those who died up there, they would rather stay put having died trying to fulfill their ambition.
I don't know about the "grieving over a body" aspect, I would hope that Mrs BP wouldn't pine away over a grave containing my rotting remains. I don't visit my grandparents graves, nor those of friends I have lost, both in my personal life and in the job. I do visit Grandpa's bench (Over Slaidburn - most Pennine Massive members know it) but only because I can have a chat with the old boy and enjoy a magnificent view.
Maybe the dead on Everest are enjoying their view? Leave them be, I would rather be left there.
Pete