In games like Warframe, Phantasy Star Online, and the like one of the common options is having different voice for players to pick from for their character. With some of the voice options saying different things from the other voice options to denote a personality. This adds some variety to the sounds you hear while in groups and in combat. Even more so in games like Phantasy Star as you can also change the pitch of the voice your character has to be higher or lower. Again adding variety to the sounds you hear from other players, because even if two people picked the same voice options they can still sound really different from each other because of the pitch of their voice. And this is not even counting the words some voice options say when or after a given action is taken. For example in PSO2 and PSO2 NGS if I'm revived by another player my character's will voice line is often something like "I can still fight!" which is different many of the other voice options with lines.
Plus there is the idea to make some weapons sound different from others. For example in real life myths there stories about how notable melee weapons have a different sound from others when being used. With some of the most famous ones being things like singing swords, swords that for one reason or another make sound when being held or moved around. Often times with a kind of hum or bird-like high pitched sound. This can also be part of the reason why that even now in some movies and shows some of the swords people have seem to always make a ringing sound or a vibrating metal sound even if the only thing the person is doing is holding it up in the air. So we could also give different options to weapon skins where some of the weapon skins also change the sounds the weapons make.
