@Psubond In the time it takes for a soflam lock you could have locked & fired a stinger, or launched & guided a liz missile.
Maybe it'll have a comeback after the class rework but I don't think it's gonna happen. DICE can keep trying to make the soflam happen but it simply isn't useful enough by the test of actual gameplay.
Maybe if they changed it to a grenade slot option, and/or made it something you could throw down and it would lock things up automatically (especially with range improvements) that might be enough. Maybe.
The major issue is that no matter what, you're NOT taking your own rocket launcher in order to take a soflam, in order to give another player (or rarely, more than one) a slightly more versatile launcher. When they could have kept their M5, and you could have just taken an stinger instead. Then all you'd be missing is a guided anti-tank missile.
Which now exists in the game with Liz.