Well from one point of view they are noisy but its "part of model",
decision to remove everything when it was possibly needed to remove one thing is conceptualy khe khe "not good move"
And from other case not sure its good to make smth "cause someone asks" - don't want Ryzom to become WoW. Looking at Ryzom thinking about it as a model of some world and in each world and model there are things that maybe not so good but they makes it feel real
In a whole i would suggest so for example sounds can be more louder/evil the more evil is foe/mob

so peaceful mobs mur mur and kinchers (from some point of view not kipee) terrifyes everyone passing by with just voices

But some foes maybe silent - sneaking from behind rrrr
And yes more voices back pls - sometimes its realy realy awful silent world if not in crowd of mobs