^^^The above = why my (HS) team does not have a Team Mom. Make cookies, paint signs for their comps, whatever fun thing you want to do as a group, but no one is the official Team Mom. So no one runs anything around here as a parent. You are all equal.
Ex: A group of you can all get together and decide you want to buy balloons for their send-off (as long as you are including all cheerleaders and not just your child, and that you have run it by me), but you can't send an email say "I am team mom and I need you to ________."
That also means that no one is my representative. So, no one can say "I spoke with Coach and she said we need to _______ for the girls."
Every now and then, a new parent who is maybe the team mom of her kid's all star team or was previously the team mom at the middle school will come in and try to behave like a Team Mom and start emailing parents asking them to get things together for events that she wants to plan (Ex: One mom tried to plan a pool party on top of a pool party the coaching staff organized, because she "wanted a special pool party just to celebrate the rookies.") That gets shot down really quickly.
I know that several people on Fierceboard are WONDERFUL team moms and they would NEVER think to try to play coach, boss other parents around, etc. However, I have always found that as soon as I place a label on the person who may plan some stuff for the girls or help me out a little, people get a little crazy and it goes to their heads.
Heck, the ROOM MOM at my kid's school seems to think that makes her the Beyonce of the elementary building, but that is another thread.