I am sorry to bump this.
I have posted things on more specialist sites, asking for advice, but all the most popular, and hut dependent routes always come up.
We are trying to find a real escape, wild camping. My mind is going to explode if I have to trawl the internet, and my books, much further. The best idea I can think of is just to choose a range that has possibilities, and with maps, to explore without grand plans.
I really hope that someone out there has found a nice route, that escapes us from the crowded 'classic' paths. Last year we were horrified at the crowds that circuit Mont Blanc, the litter and trash, and the crowds of Americans, but we love the Alps, and again and again, we will explore.