This is an idea that I've been wanting for a while now. The way this works is that theirs the clan chat, and there's a separate tab that reads "Private Chats", and in their, there would be a list of all the people in your clan. You would just tap or click on the username from the list that you want to chat with and then you can have a one on one conversation with that user with no one else being able to see the chat, that way users can talk about anything they want without being bugged. Now if you want to, you can add the filter to this, but since its only one on one, you wouldn't need the filter. I hope you guys take this into consideration and hope that you incorporate this into the next Clash of Clans update. Thank You.
~IG9887




