Characters
Nagi (Takayuki Sugou)
-Former Captain of the White Whale and current Military Chief in the Autonomous Government of New Los Angeles.
Guin (Yuichi Nakamura)
-Worked in the same division as Elma and Irina on Earth. Was their subordinate.
Player Avatars
-Many options for customization (sex, face type, skin colour, hair style, eyes, make-up, voice, etc).
-Preset designs done by Kunihiko Tanaka
-Some famous voices actors providing their voice as options for the avatar, will be announced on the Xenoblade homepage later.
GamePad
-Will show character location, question locations
-Warping to previously visited areas
Online
-The use of 'X [Cross]' has implications for the online functionality.
-Not a standard online game, more 'loosely connected'
Originally Posted by duckroll
I took a look at the actual text from sinobi about the interview, and the description Takahashi gives the online is definitely indicating something like the passive online features of Souls game. He refers to it as ゆるく繋がるオンラインゲーム which is the common term used these days to refer to stuff like the blood stains, messages, and player shadows.
Music
-About 90 songs in the game. Sawano involved in all of them.
Battles
-Faster paced, more-actiony than Xenobalde.
-Differentiates close and distant attacks.
-No healers.
-Healing done with new system called 'Soul Voice'.