When playing multiplayer we like to play with pings set to never disappear but we've noticed that if one person pings and then deletes it - the other person still has to manually delete that ping. It would be incredible if there could be an option to sync across the player experience.

Hey! We're definitely thinking about how to improve this sort of experience.

We have not decided if only the sender should be allowed to remove their own pings.
Maybe we will have a new mechanic, where pings can be "confirmed" by other players, which will keep them active until no longer confirmed by N players.

As people like Ping Wheel for it's simplistic nature, we want to put enough thought into these things!