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But Essentials has Dragonborn, Tieflings, Eladrin, Half-Elves, Drow and Half-Orcs in it too.
Most of them are in the second book though.
I basically see Eladrin as just being high elves. Half-Elves are pretty classic themselves. They're more human and less "other" than elves are.
I've never been completely sold on dragonborn, tieflings or half orcs. None of them bother me per se and I'm alright with having them in the game. Tieflings are basically mutated humans. I find them a bit on the "too monstrous" side (they look like devils). Half Orcs have always been a bit tragic in their origins (the whole orc-human rape thing) but you can have magical means of creation as well.
Drow are... interesting. As monstrous as it gets while still looking like a demi-human as far as old school sources go. I'm willing to look at them as another elf type, I guess. In my game Drow will likely not be "evil" as a rule nor even live underground as a rule.
I think it's a matter of percentage of "freak" races vs more classic ones. I've marked what races I consider to be outside of what I see as classic D&D races below. Everyone's got a different measurement. In Essentials we have:
Humans
Half Elves
Halfling
Elves
Dwarves
Eladrin
Half Orc ?
Drow*
Tiefling*
Dragonborn*
So we have 10% undecided, 30% freaks and 60% classic type races. Half Orcs aren't too monstrous. As far as being classic goes, they've been a PC race since 1977. in 4E, they're actually much, much more human looking.
4E:
http://api.ning.com/files/6tMSBWmZ6...ydCnpGpFjQQo0ZRJ3gDPB9dF1M7GupJg/halforc2.jpg
3.x:
http://www.toplessrobot.com/PHB35_PG25_WEB.jpg
The 2nd book thing is also important. My campaign is starting with red box. It's going on after red box with "heroes of" books. The only time a PC Drow, Half Orc, Tiefling or Dragonborn is going to show up is if people make new PCs after we start.
The most important thing: I've clearly communicated with my potential players what they campaign is going to be about and we're all in this together.