In recent interviews with Zuck he talks about important body language is. From their research, they found you can get really far with only face, posture, and ha

In recent interviews with Zuck he talks about important body language is. From their research, they found you can get really far with only face, posture, and hand reproduction (hence why Meta avatars have no legs) It's early days, but having very accurate face and hand tracking will be the next big step