Jonathan Rowe vice president of art at “Splash Damage” posted these old style guides / mood boards of Hitman 2016 and Hitman 2 locations giving us some insights on the artists’ thought processes, and also a good bunch of cut ideas and locations!
Have a good read:
https://www.artstation.com/artwork/4XyyeW
https://www.artstation.com/artwork/DAmNxo