<call>ing back afk members while building parties for things, cause we've all spent 2 hours building a party, is about the only time I ever used the generic <call> and even then only after giving fair warning cause it really was obnoxious, but useful as all get out.

Having multiple <call>s like they eventually did in FFXI would be great. I have a count down macro for things like Hellfire and being able to just have a <call-normal volume> at the 5 second mark would make it a bit more noticeable. Adding a slider to the audio controls just for general call volume seems like a good idea too, though I think that being able to completely turn them off is defeating the purpose. A delay between uses like /yell in XI where once you use it you have to wait N seconds before using again so people don't just spam.

Having them tied into the vibration was something they had in XI too, right outta the gate, nothing was more entertaining than a 5AM xp pt where your starting to nod out then your controller jumps outta your hands and rattles across a floor/desk, while the game makes horrible noises.

On the note of adding it, the input parser already processes <blah> there's really no reason at all that having /call or <call> work should be that much work. Unless of course the code isn't modularized well and the parser is spread across 3000 files jumbled in with other crap.