I have never played a Dwarf, or a Druid. No particular reason why, they just are things that haven't hit my table. I've theory crafted for both (a PoW Dwarf blender, a 3.5 VoP druid for a Norse Campaign, a Halfling Goliath Druid for a battle arena set up,) but it's never advanced from there.
What are some things you folks have left by the wayside? I'm not so focused on things that have only been out for the last year or so (though, I have already ran a Vigilante for a couple one-shots,) I'm looking more over the grander scale.
I think the last time I played a halfling was around 1983 or 84, and I don't think I ever played a gnome or a paladin.