Yakk: While your system would definitely work and is nicely easy I'd rather not give everyone a Legacy, because it would make them kinda worthless. Scaling weapons for everyone would be a different approach, but a Legacy is connected with a story (and sometimes a purpose) and such an abundance of Legacy items would not fit my concept of gaming style.

Thank you for the advice though, I'll keep it in mind. Maybe I'll use it for a truly "legendary" campaign where every character will have an own legacy.