Team communication has several key points:
- Information sent from the team captains/lead mentors to the whole team
- Coordination across each department/division/whatever you use
- Feedback/commentary from team members
- project management (and a team always has multiple mostly independent projects going)
- Detailed conversation (give and take) within each project that eventually leads to decisions
You may very well find some additional tracks you need to add, but at a minimum, ensure that your team intra-communication supports the cases above. Remember that an effective communications plan means that:
- Everyone who needs to know information gets it, in a timely manner
- Very few people who do not need to know information get it
How to meet these requirements simultaneously is something I will admit straight up that I do not know how to do in any general sense, but that I have always worked towards, both professionally and as an FRC mentor. Rank #1 above #2, but absolutely don't ignore #2 - everyone has a personal information overload threshold. Once you cross that, people stop getting the information they need to know.