Ive recently became aware how great themes are, and one of the best kind is branding.
I was playing borderlands 2 and there is so much branding, fallout has some too, its a really fun concept.
I love getting to choose a company that Ive gotten to know, got results from or got addicted to.
Components for crafting might have old world manufacture names or the ones that exist like Bio-corp or south-station, black eels.
There must be some industry in the under rail. it would expand the action side as well, factions have industry the excel in or be mediocre at a product.
Or dr. so-and-so makes the best necron-converters in the land and you might see this item through out the under-rails, and to ge the best one have to meet him.
If the people you meet running post-apocalypse sub-terrain food courts where brand name food chains.
a good story plot might be the supposedly long dead bio-corp just became a well know Eel burger franchise.
Or say your rummaging through a trash bin and you spot some gun parts and you get really amped you because you see a Cat logo in the corner. And your like cat-people make the best delta-phase ion-cannons, and you do a little air gaiter solo in phrase of your findings.