Welcome to My Swiss Alps.
Hope we can provide some information to help you undertstand Swiss hikes.
A very good site for detailed information is Switzerland Mobility.
In it, you can find the major Alpine routes, searching by name, name of towns, or by choosing routes on the map.
map.wanderland.ch/?lang=de&route=all&bgLa yer=pk&resolution=100& X=614800&Y=154500&laye rs=Wanderland.
The very best topo map, with many esoteric options, is Swiss topo:
map.geo.admin.ch/?topic=ech&lang=en&bgLa yer=ch.swisstopo.pixel karte-farbe&layers=ch.bav.ha ltestellen-oev,ch.swisstopo.swiss tlm3d-wanderwege&layers_visi bility=false,true
I have opened the hiking trails info layer. Blue are technical climbing....is that what you seek?
If not, red trails have varying degres of difficulty, while green trails can be done with no equipment or special footwaer ( if you are so foolish.)
There is no question that the trails have plenty of hikers. The whole country s only the size of Montana. or maybe Montana plus part of Wyoming. The trail network is dense. Since some of the trails are in areas that do not permit automobliles, access can be by public ttransport, including cableways.
Whether or not you like the huts will be a matter of personal preference. They provide a very useful function, not luxury accomodation. Food is basic. They certainly minimize the load on your back for a multiday hike; "wild" camping is not impossible in Switzerland, but it can be regulated in some areas.
Some forum members are experienced distance hikers; Iam not.
I'm sire thathey will jump in.
There have been threads in this forum on multiday alpine hikes, but I don't have time to look them up at the moment.
here are a few that I remember:
www.myswissalps.com/fo rum/topic/dufourspitze -west-ridge-pd-uiaa-iiiii
Once you identify a route, you can altitude profiles and quite detailed topo maps.