I think we should compile a laundry list of things that should be race-unique and things that should be across the board. In regards to a character customization, we don't need to compare them to other MMOs. They have one in FFXV's comrades DLC and its pretty decent. But, most importantly: Its in-house tech and we know FFXIV uses a fork of the Luminous Engine that was used in FFXV, so there is a degree of assumption that it can be done, with hurdles, but has less of a deflection point imo.

https://youtu.be/gYz4Oip1Yuc?t=3m20s