Especially if you are playing alone and have no mic. I can't tell you how frustrating it is to be holding down a hill, and someone gets in, kills a teammate, then flanks me as a result. Seriously a spot would have helped this. And you can see the livefeed, but sometimes I am fighting my own guy and can't look down at that. I am in the habit of spotting everyone I see. One of the reasons I hate playing with randoms is they never spot! This is part of watching each others backs. Went lonewolf once into ranked and my teammates spotted everybody! We had their whole team marked up and it was soo NICE.
Random rant I needed to get off my chest