Before I'd consider making a map I would want to know a few bits...

#1 Which races have a history of friendliness? Which have an "on again off again" relationship? Which have a long-standing hatred?

#2 Are any of the races "off-shoots" of another... i.e. Are Goblins midget jungle Orcs? Are Goblins "Jungle Dwarves"? Are elves "forest humans", etc...