If I may bring up a system, have you considered [url=http://www222.pair.com/sjohn/risus.htm]Risus[/url]? It's an extremely simple D6 based system, only 4 pages long and literally runs on cliches to power its characters. Give it a read if you'd like, though this might be stepping into the Tabletop Roleplay, but I find it's a very easy way to add some meat and impartial mechanics to a game which focuses more on narrative.