I like the idea of a 'duel' mechanic. Not to queue for and gain rewards from but just selecting a character and requesting a duel right there where you're standing. Common in a lot of mmo's and can get highly addictive!
This would definitely be a gamechanger. Would be nice to also check when your daily's reset instead of travelling to protectors enclave to go look at Harper howard and Rhix. As for the chat, just use the xbox one smartglass app, works a treat.