I don't get any footstep audio, enemy or friendly, 95% of the time. Half of my deaths are from 5 feet behind me - I don't get footsteps, I don't get gunfire audio, all I hear are bullets slapping my skin 2-3 times and I'm dead. I've tried every audio combination several times, I've given up and just use headphones with war tapes.
I get that sometimes with gun fire and explosions you shouldn't hear footsteps, but I was upstairs in one of the warehouses on Firestorm (no fighting going on) trying to find a flag camper and I watched my team mates running around directly beneath me and run up the stairs to me with ZERO footstep audio, like they weren't even there.
I've also heard some players have the complete opposite experience, basically way too many and really loud footsteps all the time. This makes me worry that the audio is truly broken and won't get fixed any time soon.