Squad Communication

I feel like Squads are very limited in what they can do to effectively communicate with each other. To help this, I suggest that there should be a system where Squad Officers can mark up to 5 markers on the map with only one of those markers being public. I also suggest that there should be a system where Squad Officers can draw on the map, which can only be seen by their Squad Members. I believe this would drastically increase communication and teamwork as a whole because it's really hard to explain exactly what the squad will be doing. Any thoughts on this?