Zeromaru X
Arkhosian scholar and coffee lover
I have no problem with the idea of allowing a Warforged PC in Greyhawk, because honestly I can think of tons of possible origins for an individual. But unlike the "new" PHB Species, I don't feel compelled to put a large population of Warforged in the Setting. Less because I think it is a problem for Greyhawk, and more out of respect for how distinct a story Eberron has there, and not wanting to take away from that.
Same. Thought, for me that they aren't in the PHB is more relevant, because people expect that anything in the PHB can be available, while stuff from other sources needs the approval of the DM. Thus, a species not in the PHB doesn't necessarily needs a place to call home. The DMs needs to work with the players to give it one.