Oh yeah, the Fame Checker. I completely forgot about that thing. With that said, can you really count that as a "unique feature" in the Kanto region? I mean technically yes you can because it is unique to Kanto, but as you say it's such a nothing item that it barely qualifies.My bad. I totally forgot the VS Seeker was in DPPt.
I guess the pointless Fame Checker and the ground-picked berries instead of berry trees are FRLG Kanto's unique features.