Suggestion:
Make animated eyes open and close while the player is moving or standing
Make the player while eating food more animated (make it similar to mc bedrock animation)
Make the character while crafting using a crafting table show to the other players beside him (like you can see the diamond that places on the crafting table)
Make the player while drinking potion,water,milk looks more realistic like handle the cup and drink it
Reason:
That's would be cool I guess and will make the client more playable and more realistic