I like earmuff a lot and almost leave it on all the time since it's release, I can't focus on conversation if there's too many voices going on around me.
But I have to change earmuff settings quite a lot depending on world size and player group size, for example in larger world with more separated player groups, in-world voice falloff helped quite a lot, so I would use settings like "Range: 5m / Outside Volume: 50%", In smaller world there's only little voice falloff, I would use something like "Range: 1m / Outside Volume: 30%".
Would like to see maybe 3-5 customizable preset slots for earmuff settings, so I can have different presets for small, mid and large map size without tuning 3 values every time when hopping to other world.