At the moment, the chat can make a "pop" sound when new messages come in. We've gotten separate folks asking for the option to make it something else, maybe something quieter. I've implemented the sound volume slider, but some don't feel that's enough, they want something softer too, that they can still hear over their music. So an option for multiple chat sounds definitely makes sense.
On the other hand, I don't want to clutter up the Sounds option with a bunch of dropdowns & toggles, or it becomes messy. So something else I'm now thinking about, is me replacing the pop entirely with something else, saving the need for another dropdown. So if you actually like the pop, now is your chance to defend it!
I haven't had much of a chance to think about this, as I'm still working on other new features coming soon. So please get your posts in ASAP.