I’m sure pretty much any guardian who uses shouts in their build has realised eventually that “Hold the Line” is the the only shout on the guardian where…..well there’s no shouting.
I use this skill excessively when I play, along with “Save Yourselves” and I always feel a little down when nothing can be heard from using it. I will admit that lately my guardian has been shouting a few new lines I haven’t heard recently and have heard “Hold the Line” being shouted the odd time but never when I use the actual skill.
Maybe there’s a reason that I haven’t found out about that explains why there’s silence when using this so if anyone knows please enlighten me 
Oh and also I’d just like to say there are more important things out there to fix sure but this one little change would make me a happy bunny
Starduster