So are you saying this book should make as much money as Epidsode IV: A New Hope and will give generations of fans years of enjoyment?t
Scott you better be careful then when, PHB5, 6 and 7 comes out. You better make sure you get my Psionics out before then!
As for the actual conversation in this. I am perfectly fine with out there races. My main complaint is that unless there is some logical reason, ie; they have travelled here from all various realms like Sigil. I prefer there to be some amount of co-history and connection between the races. I dislike it when races just exist within a vacuum of each other. I really like the idea too of all sorts of various races rubbing shoulders with each other in close-proximity thus why I run so many urban campaigns in densely populated, multi-racial cities.
As for how I add races I go with what other people have said. I tell the players to pick the race they want based on stats. Then we together decide their culture, appearance, etc. for the campaign.
Heck my current campaign setting has as far as really out there races:
-Demon Spirit possessing Humans: Their appearance altered substantially in multiple ways from simple things like horns to centaur like insectiod bodies, etc. (This covers a lot of races actually from Tiefling to Dragonborn, etc.)
-Cybernetic bodies brought to life by a Spirit: You can figure out this appearance pretty quickly essentially a cybernetic Warforged kind of appearance.
-Various animals who have become anthropomorphic. This is self explanatory.
-Shape-shifters whose basic appearance is the same as the Doppelganger.
As for myself I usually DM, but the races I have played the majority of the time:
-Gnoll
-Elan
-Tiefling (my most common and appearance has varied wildly)
-Human