I use it some because I'm getting old and my eyes are going bad...but like you said, there's a simple counter called "cold blooded"...
As much as I hate to admit it but iv started using it again to finish the pretiege challange, yes its a good optic especially on LMGs but I wouldn't really say its OP since you do still have to aim to actually hit anyone.
The target finder is a noob tool, a crutch for bad players, time and time again it is proven that when you try to cater to noobs you ruin the game. It NEEDS to be taken out the game, not nerfed.
I bet the idiot who thought of the target finder also thought of the second chance perk.
Yeah that was annoying. More annoying for teammates I imagine. Going to revive someone and then you get shot yourself. I did that once or twice when I first played the game. Never bother to revive them now. But Ninja, Marathon and Tactical Mask are better green perks anyway.
What I read in this thread is people can't pad their K/D ratio with noobs and less talented gamers as easy, because of the TF. They now have to earn their K/D. I'm just sayin