The quality of sounds in my opinion has gone down. Sounds are oversimplified based on the surface you are stepping on, meaning if you for example step over one of those fences made of rocks that sometimes surround houses and have cracks in them, you will hear the same pebble dropping sound as if you are on top of a mountain. Same wood screeching sound on every step in some houses. Same muffled echoing on others, regardless of size of room.
And about steps, after 2 years it's the first time I don't enjoy playing Arma at all anymore. I was closing in on 3k hours, I can't even get myself to open the game anymore. No sound of enemies whatsoever when you are in a house at a different floor, no sound of steps if there's rain outside (it's not muffled or anything, the rain completely blocks any foot steps) and the ever present sound of your own steps 5 meters behind you. My aim is not great so I rely on sound a lot. And right now it's terrible.
Every patch you have 2-3 good changes and a fuck ton of mishaps, some of them make me wonder if you actually tested any of them.