My approach to games is how I approach writing, characters should progress according to their personality in response to their enviroment. So characters that have been in space prison a long time would grow in ways prisoners do here but spacier. When running a game I let players make extra roles for things their characters would have noticed but they didn't think to ask. Again my job as the person isn't to hamper players it's to give them as fulfilling of an experience as possible. I give them the power fantasy but I also make them earn it.