In reply to JustJaune
Not as much as you think it has in fact the themes seem to be reinforced if you look.
Weiss's father is playing the wicked queen
Adam is playing the beast or maybe White Fang is
Yang is looking for what is just right
Ruby is on a trip much like Red to her grandmother's place.
Salem and WTCH aka the salem witch trials where mass hysteria and turning neighbor against neighbor happened which is what Salem has stated her goal IS.
So no Themes are actually being reinforced from what I can see.
And it doesnt make sense because Oscar isnt a hunter has no training and is the weakest person Jaune season 1 episode 2 is stronger then oscar is currently that is how out of depth Oscar is.
Him joining JNPR makes no sense based on what we know.
What makes more sense is Qrow keeping him close and trying to train him up as he handles the issues.
Oscar's greatest attribute is knowledge not filling in a slot that he is not equipped to handle in any sense of the word.