I'm getting ready to start up a new AD&D 1st ed. campaign, and I'm simply not interested as a DM in having the characters rescue the princess or save the village. I want characters who are selfish and greedy. I want the primary motivations to be gold, glory, magic, and power. I'm telling the potential players this up front. Within that context, it will be sandboxey and open-ended.
Has anyone ever imposed alignment/personality/thematic restrictions like this in a campaign? How did it work out?