Was thinking in my half awake state about a few things that I think would be pretty cool in the game..
All characters have a basic ability to set up a small camp. This would act as a base of operation including storage, crafting stations of sorts and a place to rest when we...
think of forrestry, cartography or rare animal collection. the character goes out into the wilderness and is able to take grafts from rare trees, fruits, etc.. capture rare animals to bring back to the tribe to breed.. or simply make maps of the adventures.
We could even have tech specialists able to scavenge special parts from old cities.
You could pull up camp and move on to another location and repeat until you are full or just miss civilisation. Alternatively it could act as a future stopping place for fellow explorers.
I think this could give the soloist a bit more to do in game with some abilities allowing them to be somewhat self sufficient while still encouraging casual interaction when they are able to sell off their spoils.
Added to official list ~KiwiBird