Plane Sailing
Astral Admin - Mwahahaha!
I rather like favoured enemy being the defining feature of the ranger. They had a bonus against giants in 2e that evolved into favoured enemy in 3e, so that idea of opposing a certain type of enemy has been with the ranger for a couple editions.
Actually, they had a bonus against 'giant class' (which included giants, trolls, ogres, orcs, goblins) of +1 damage per level when they were first introduced in the Strategic Review. So the idea of opposing a certain type of enemy has been with the ranger -since its very inception as a class!-