I hope bullpen roles are antiquated, because I don't think they are necessary and I never bought the idea that every reliever needed a set role in order to maximize his talent. I don't know that positions are antiquated though. Hinch uses a lot of different line-ups, but I think some of that is due to lack of talent. It's good to mix and match, but I think ideally, you still want either a primary player or a platoon at each position which is used most days.