@Cro_Pittt genuinely yeah, is Low Profile really that big of a deal? I've played Lifeline / Pathfinder (Path when LL isn't available) for well over 1000 hours and I've not noticed any real difference in terms of TTK / overall durability.
Mathematically speaking, it's barely 1-2 damage increase on ARs / SMGs, mere millisecond decreases on TTK. On shotguns it's still not a noticeable decrease in TTK, as most shotguns still require 2 pumps to down a target, both with and without Low Profile.
On top of that, the changes to leg damage don't really matter either as most enemies will aim center mass. If you are in situation where you've only got 15 health and are diving for cover on a LP Legend vs. one without, it's not like the enemy will only fire 1 bullet and call it a day. If the first shot doesn't kill you, the next 5 probably will, with or without LP.