I like it, and my player's are happier, when each character has their "thing" (this is just a preference). In an OSR RPG, every character has a class; in Savage Worlds, characters have all sorts of Edges that give them very different abilities); in the world of darkness game, each character has a splat that gives them completely different powers. However, it seems like in D100 systems (I happen to be using Renissance D100 and Pirates and Dragons), you end up with very similar characters - just a handful of % points difference. I'm sure I must be missing something. How do you differentiate characters?