Some of the 1st Edition RPG books emphasised that the other Great Clans were vying to develop contacts inside the Unicorn as they modernised and assimilated, in the hope that they could develop their influence inside that clan (read: turn it into their ally.) I've often thought that that was one of the missed opportunities of early L5R. There could be interesting stories set in that environment, featuring not only spies and courtiers from every clan, but also a wide range of Unicorn who had begun to learn the ways of each of the other clans, and had influenced their diplomats in turn.
A set of cards set in such a story might be a lot of fun. It features human-scale conflict, philosophical differences, duels, raiding, and the struggle for the soul of a clan: everything one needs, really.
Edited by Kitsu Seinosuke