I think that horns can be something pretty cool in Hawken.
As holotaunts actually are, as official purchases, SFX based only (just wave sound thus no mech animation involved..) and limited to 1 use only per match.
The limitation of 1 or 2 uses per match is logical. Or by coherent utilization delays..
This way we don't have pilots feeling annoyed because of others abusing too much of this potential mini feature; which should be something fun (useful too?) in the game and thus not an inconvenience after all. *Add these into the mute user's choice too if required...
I see a number of good number of cases for it.
1. Team intimidation... ( a la ahu?, as in the 300 movie.., right? )
2. Fun momentums..
3. post yours...
Can be fun.. =)