I believe the 12-man squad that was being considered consisted of two fire teams and a C2 team. I can't remember the proposed make up of the C2 team. Was it SL, FO, RTO, and Corpsman?

I believe the change was intended to make the squad more of a stand alone unit for LIC, COIN, etc. I don't know if the USMC is still considering the change.

That's the best I remember from the reading I've gone; but, likely, I've gotten some details wrong. Someone in the know chime in and correct me.