[@Windicator]
The C3 is used to put all the data together, not to transmit it.

The C3 Imaging Unit receives everything that everyone in the unit is seeing, regardless of whether or not they have the C3, and then puts it together in the mech units that have the C3. You don't have to have the C3 to send the information.

It's like the thing that lets someone write a map. EVERYONE doesn't need to write a map- a couple people, maybe, but everyone else can, by default, yell out their shtuff and the one or three people that DO know how to write the map can do it.