I have been playing it, and it mostly seems like guess work- trusting your archer team to take advantage of you turning the enemy's back towards you, or hoping that nearby infantry unit will attack the flank you just exposed.
I've just had some several excellent games, and I feel I did a lot- that didn't involve trying to hold a choke point against superior forces (it's better to withdraw). But while I was exhilarated to help my team to the win, I did feel a little ripped off that my clever sacrifices were not appreciated. Some of my best moves for my team resulted in a low K/D rate.
But I am pretty sure my team mates appreciated what I did, and that's all I really care about. My e peen is already massive, but I do worry about others.