I could see it conflicting with kill-packs though. If you do implement something like that, HAC2 should have a toggle to switch between local or server sound pack options or something probably. Or a way to disable server sounds if clients don't want them at all.

I just think it would be cool to implement custom kill-streak messages that are done server-side. Ex: Could have the Unreal Tournament sounds play for certain things. Audio warnings for entering disallowed zones could be handy for certain things.

Honestly, I can see a lot of uses haha.