Last year a group of 7 girls removed themselves from the team group text, because "it blew up their phone" and started their own text group. It was not meant to be an exclusive group, just some of the older ones not wanting all of the "hey", "hey", "watsup", "hey", etc. Not a good idea. These girls rarely talked and never talked about anything substantial other than, "what are we supposed to wear tonight?", "exhausted", "that practice beat me down", etc. BUT, it really upset one child when she noticed they weren't talking on the group text anymore and found out they had their own. She assumed it must be because they wanted to talk about her behind her back and told other team mates they were talking about her. One girl had the entire text history and was able to prove it wasn't going on, but the damage was done. Anything that is going to make a team member feel excluded, insecure, less important, etc. is not going to be beneficial to the team as a whole.