So I just saw this on tumblr and double checked to make sure its right which HEAVILY raises the chances of us getting Pyrrha backstory.
So Argus is a term that can be interchanged freely with Argos.
Someone who is a citizen of Argos is refered to as an Argive.
But its not the ONLY use of that word.
The Homeric Bards when talking about the greeks who attacked troy called them Argive.
Well Achilles and attacking Troy go hand in hand. Aka Achilles would be refered to as an Argive which can also mean someone from Argos or Argus.
Which can translate to Pyrrha being from Argus.
This type of word play seems VERY much up RWBY's alley.
If this turns out to be true and we get a lot of backstory for pyrrha it will be interesting to see what they do with that.