Since we know we're going to get some info about half-breeds in Heavensward, if it turns out that half-breeds can in fact reproduce then it'll pretty definitively settle whether the races of man are different species or races.
V'aleera's Wiki - https://wiki.ffxiv-roleplayers.com/pages...eera_Lhuil
V'aleera's Tumblr - valeeralhuil.tumblr.com
V'aleera's Tumblr - valeeralhuil.tumblr.com