For my interior design I've converted the armory to make it feel like it's a central hub for players to buy new weapons, sell junk, upgrade and repair their arsenal and equipment.
Very inspired by the gun stores in Cyberpunk 2077 as well as the workbenches in the Mass Effect games and Metro Exodus.
Here's the link to the overview of the environment's level design ----> https://www.artstation.com/artwork/YGWE3b