I would like to see Tortlle ...
But im not quite sure how would they work to be honest. :-/
(You know what i mean, right? Armor + shell = mess.)
But i believe that Aasimar should be in "must have" box ... we allready have devilpeople, it would be sad to not include angelpeople. :-/
It would be also nice to include Warforged, especialy since there allready are some constructs in EA ...
If we dont get Deep Gnomes and Deep Dwarfs, i shall be very sad.
But im mostly looking for all kind of Gnomes, Dragonborn and Half-Orcs.
But im certainly not against litteraly any race, the more the better.
About classes (even tho i now see you didnt asked about them) ... well, i would certainly like to see Circle of Shepherd Druid, Oathbreaker Paladin, and War Magic Wizard.
And this ofcourse: http://dnd5e.wikidot.com/sorcerer:aberrant-mind (Funny isnt it? :D)
That is all excluding PHB races and classes, wich was all kinda promised by Larian allready.
