Honestly, I would kill for this. Having the NPCs always be in about a 4x4 tile area wandering around and ALWAYS being there has just kind of grown tired. I feel like programming the NPCs to really be alive and act like you're there (outside of trainers turning your way when you run) would just be a giant leap in the interactivity of the games. Characters actually noticing you exist for one would just be a big leap for the series. I mean, we had characters disappearing and appearing in GSC with the siblings for the days of the week. It being a feature EVERYWHERE would make the game seem so much more life-like and more enjoyable of a universe to be exploring in.