One thing I don't do enough is reflect on the cool art and gaming stuff I've discovered since returning to RPGs in 2012. When I tried to think about something cool I remember from way back, the Centaur character class from Dyson Logos immediately popped into my head.
I like how the class gives the character hoof attack damage that isn't fantastic at first and never becomes overpowered. This means you won't have to make a painful choice between "hoofing it" all the or using that awesome two-handed sword you got your eye on. But with a d6 damage as you level up, you'll be eager to stomp a goblin or two.
If you love BX D&D, this is pure gold right here. If you're running a game set in a forest, woodsy area, or maybe some plains, toss this class into the mix of player choices.