an important aspect of rogues is the interaction with the world, using a fantasy background allows to take a lot of shortcuts in world building, imagine you joi

an important aspect of rogues is the interaction with the world, using a fantasy background allows to take a lot of shortcuts in world building, imagine you join the game the first time and you have to select a role, you kinda know what to expect from an elf range or a dwarf thief, but if the world is original content, say like rogue trader, most of the initial choices are arbitrary and disorienting on the first few games and can impact negatively on the perception of the game system