For a game that wants to be social I would think proximity chat would be more convenient than typing. Also would be quicker to walk up to guardians and simply ask for help or whatever than typing each one a message. It can be opted to be turned off. Have a room I'm a public area also, where fuardians can go to for inte tons of grouping up for activities since some aren't matchmaking. It would be pretty nice to even walk up to another guardian in patrol and as you get closer your voice volume goes up enough for you to compliment them on their guardians looks or ask where they got that sparrow. It's simple and optional bit I would think it would be popular if it was known.