What if players were able to control their game's day/night and weather cycle?
This would allow players to roleplay out scenes set at a specific time without waiting for the time and weather to actually change.
In order to prevent trolling or fighting over the time, sky changes would only be visible locally/on the setting-changer's PC, rather than globally/across the whole map.
As an example of how this might work in practice, let's say you're in a wolf rp. You're trying to set the scene for a dramatic pack meeting at night, and there's supposed to be a storm rolling in. Waiting for the in-game time to change could cause you to be waiting for quite some time irl, and waiting for rain may not even be possible because some maps only have sunny weather by default. If there were some sort of local time and weather option, you could make your own game match the scene to add to the immersion of your post. If your pack members wish to see the same sky as you, they can change their settings to match yours. Other players who aren't involved in this nighttime meeting could leave their settings unchanged. They would see the map's default sky. Once the pack meeting event is over, you could reset the time and weather back to default. Exiting the game would also reset your settings.
Like many others have mentioned, I would also love to see more animations being added.
There could be new fighting animations (no actual damage though--I feel like that would change the game from a casual roleplay game to a survival game), playful animations, hunting animations, fainting animations, etc. Maybe there could also be different walking animations to show age? A young character could have more bounce to their steps, and an older character could walk sort of hunched over? Maybe there could be a limping animation for injured characters?