PS in other game systems

I'm working on something based on the old Vampire Dark Ages rules for an investigation campaign with very little combat.

Its basically the core storyteller rules with slightly adjusted talents/skills/knowledges, 4 "classes" instead of clans (fighter, rogue, cleric and wizard) and each class has few discipline like powers. Instead of blood fueling the disciplines, I've created a stat called fatigue, its derived from different abilities, but which abilities vary from class to class.

I didnt want to create races, instead I'm doing a lot of merits and flaws, and its up to the players to pick what they think would be appropriate for whatever race they want to play.

Magic is a discipline available to Wizards and Clerics. There are no spells, instead the player describes the effect he wants to achieve, the GM assigns a difficulty number and a fatigue cost.

Currently I still need to figure out exactly which powers/disciplines each class gains access to and I need more merits and flaws, maybe I'll post the rules for some creative input

The whole thing is meant to be simple and focus on roleplaying instead of rollplaying, so a lot of things are left vague and up to the GM. It'll probably fall apart if you try it with serious min/maxers or rules lawyers, but I have high hopes for using it for low combat investigation games.