I do think they will need to keep a large open floor space on the gondolas for wheelchairs, strollers and ECVs which is something that ski resorts never have to deal with.
While its not very common, there absolutely are people in wheelchairs at ski resorts. I used to operate a gondola at a ski resort and once in a while we would have wheelchairs and strollers etc. The issue with ours is that it was older and was raised above the floor. It also only held 6 people. We would have to stop the lift and then the operator would have to lift up the front wheels of the wheelchair and 'wheelie' them in. The doors were just barely wide enough for most wheelchairs.
Here is a picture where you can kinda see what I'm talking about
http://ww2.hdnux.com/photos/44/57/23/9630917/5/1024x1024.jpg
Newer gondolas are much bigger and have a floor even with the ground. Sometimes gondolas are also used to transport stuff used on the mountain like huge carts of food or other supplies, as well as big rolling trash bins and whatnot.
I added a picture of me (pretty sure that is me) putting the cabins away.