It's in the vanilla game apparently, but does the wrong call, so it's essentially fixing a bug. It's really simple, it just adds a counter to show how long your soldiers are wounded for after a mission. These have all been tested as working properly on Linux, and they work together without conflicts. There's thousands of modifications available for XCOM 2, so even these took a while of sifting through junk. I will keep searching for you, but here's some quick picks.
I've played 47 49 hours of the game, and I do feel like certain aspects of it are lacking. The problem is, it's still a bit of a buggy mess, a lovable mess mind you. I love XCOM 2, it's probably my favourite strategy game right now.