Actually, I'd love to see roar back from IT.
I thought about that this would probably bring a lot of spam aswell, not to mention the first week if it would be there for us, people would go crazy with it.
However, since it's actually something I find rather needed in a game like this.
You could work around this and make some sort of function that blocks the users from using roar more than a few times within a time period.
Lets say someone roars 2 times in a row. But if they roar a 3rd time within... something like 30 seconds(or more). When pressing roar, nothing will happen, and instead they'd be silenced for the next 5 minutes?
This way we'd have a roar inside the game, but people wouldn't be able to spam it, and if they abuse it, they'd automatically be unable to use it for the next couple of minutes, and even though people would still be able to press roar again after those minutes has passed, they wouldn't be able to spam. And waiting for that long just to be able to press roar 3 times again isn't really worth it even if you want to be annoying.
Sounds rather solid to me, and if it's still too much roaring, it could be limited to 2/1 roars within 5 mins.
Cause functions like those is what gives the frosting ontop of the cake.