I kill a lot of people with heat. I usually roll with my friend and we roll double heat, we can lock down the tracks on station using heat back to back. You just have to communicate. I know pugs have no sense of teamwork, but with a fireteam you should be able to get creative with it. I prefer using it over the bugged blitz.
On a side note earlier today I was in a game with Rock and heated him zoomed up and everything. He walk to me to melee me and had to cut off heat to swing at him(got him). Still think we should be able to use a pistol using it. I meaning we can reload during(using both hands to reload) it why can't we shoot?!