Maxperson
Morkus from Orkus
You can drop an entire community of dragonborn into any spot in Greyhawk you want. I can drop them into the Greyhawk City if I want to. There zero need to find an empty space for them, because the level of detail on the Greyhawk setting is so minimal that almost anything can have communities almost anywhere without disrupting much of anything.Again.
The issues isn't that you can drop Dragonborn anywhere.
Its that you can drop Dragonborn anywhere
Because Dragonborn won't matter. You'd have to drop the PCs in an empty space where Dragonborn exist and at which point choosing Greyhawk as a setting won't matter.