Hussar
Legend
But, why wouldn't they include the two most played races? I mean Tieflings and Dragonborn are apparently very popular options with players, so, it would be weird not to see them in the new setting, despite being called out as uncommon in the PHB.I'd bet they do. But I'd bet they also include Tieflings and Dragonborn even tough they are uncommon.
I'm sceptical that the common/uncommon distinction will carry weight there.
See, because the whole common/uncommon thing does have an additional effect. If I sit down at your table and pull out a halfling character sheet, I can be pretty sure that it won't raise so much as an eyebrow. But, I'm supposed to ask you before even considering to play a dragonborn or a tiefling and apparently, those races are often not included in people's home-brew settings. There are several people in this thread who've claimed that they don't include them.
((And, before anyone says it, NO I DO NOT EXCLUDE HALFLINGS. Heck, I don't exclude anything. I will rewrite my entire setting if I have to to allow you to play the race you bring to the table. Currently, my campaign consists of a dream being of an aboleth (whose race name I forget), an owl folk, a war forged, a dragonborn and a tiefling. It's kinda funny that the tiefling has become the party face because he's the least weird being in the group

Imagine what the numbers would look like if we stripped out the whole common/uncommon thing and included, say, dragonborn in the Basic rules. Do you really think the halfling numbers would stay the same? IMO, the halfling numbers are as high as they are because of the privileged position halflings are given. Take away that, and they'll pretty much vanish from the game.