Introduce Voice Dialogues / Conversations.
One of the greatest things about apex is the lore and the way the legends interact together. From the mirage and crypto trailer, to pathfinders relationship with the other legends, it's the small stuff that makes the game great.
There should be dialogue based on the legends being played, where they interact with each other based on their character. For example, when one legend makes a kill, a team mate legend will respond to something said.
It'd be cool to see their personalities mix and clash. Like mirage making a pass at bangalor after he makes a kill, and getting shot down. Or seeing blood hounds relation ship with pathfinder. Caustic being worried about Watson. Voice lines can be programmed in after saying thanks / no problem, after kills, or when a conflict is finished.