Add suggestion what to talk about in chat so people can break ice more easly. Simple thing like "what games you play?" or "what hobby you have?". It would help a lot while people don't know how to begin conversation. Gray small half transparent text would be enought I think. You could more or less coppy the design of those groups annoucments in messenger. When you change something about group chat(neme, emoji, background, etc.) then there is sent special messenge that is plain small text in the middle of screen. You probably know what I mean at this point. Coppy it to give those suggestions and I am gonna be happiest fur alive. <3