I assume the option to customize ingame sounds so that it sounds individualized would be a bit crazy, but they could do it.
I think something that sounds like an airy THUMP (Hunter) / a sort of windy sound (Warlock) / mixture of last two (Titan).
Having the sounds fairly subtle, but definitely noticable, would do.
Alternatively they could remove the sound altogether...
English
-
Custom sounds would be a bit crazy. Unless the game allowed addons or mods, in which case it would be easy because so many modders would be all over it.