No other particle systems will be smoothed. It's super resource intensive, and doesn't work on multi-colour systems in the first place due to the way the filtering works.
Do you (or anyone else) know of any example games with game chat enabled? I'd like to see how it looks and works before deciding anything. I know that it has to be enabled from Kong's end, so I can't just test it without committing on actually implementing it.
 "Mutilate-a-Doll 2"){kind=icon}
No other particle systems will be smoothed. It's super resource intensive, and doesn't work on multi-colour systems in the first place due to the way the filtering works.