Thinking about how Salem sparking an uprising against the Gods and uniting humanity under one goal is eerily familiar to Ozpins view on Ruby being a simpler more honest soul that can spark the hopes of man.
Both reading stories and being inspired to lead their lives off it. Putting their message out to the world and the people answering back. Their actions are the same but in different fonts.
Their imagery is even eerily familiar, most notable in mind being consumed by water, the cliffside/memorials, and both having parts of one of the Brothers powers within, moon symbolism, etc.
Ruby and Salem are building up to be foils of light and dark.
"Likeminded souls indeed"
Like of course Oscar is heavily implied to have a crush on Ruby. They're two characters who are a version of Oz and Salem without their history.
DING DING DING DING DING!!!! EXACTLY!!! This show is one about parallels, rhymes, and mirrors and these four are at the heart of all of it.
I also think it's really interesting that the task the GoL gives to Ozpin is to unite humanity when that's... kind of exactly what Salem did, only she was punished for it? smh. god forbid women do anything.
But anyway, I love that Ruby has taken over Oz's role in that regard. One of my favourite shots in the show that pushes this is this one from The Lost Fable. Where the line right before it says something like: "In time, (Salem) would find her adversary."
The story Jinn tells to cast is one of Ozma being setup to stop Salem, but the story the show is telling us, the audience, is that Ozma walks off screen revealing Ruby as Salem's actual adversary.
There's also some interesting allusion stuff that pushes this even further with Salem being the witch from the Two Brother's fairy tale that is killed by a silver bullet, and Ruby is a "girl who is also a gun" with silver eyes. But to talk more about the SEW stuff, I have to address the celestial symbolism you pointed out.
What you say about "foils of light and dark" is also right on the money. The way these four interact as symbols within the central plot is so poetic. We have Salem as the darkness of night, and then Ruby as the moon. Silver eyes, as Maria explains in V6, "shine like mirrors, reflecting the light of the world onto darkness". But silver eyes don't just reflect the light of the world, they reflect the desire to preserve life onto that which threatens to take it away. Just as the moon reflects the light of the sun.
Isn't it just. So. Interesting. That the person the story is telling us Ruby is most afraid to lose... is Oscar Pine... a sun coded character? So!!! Interesting!!! I'm so!!! Normal about it!!!!!!!!
By extension of this, I do think Oz is generally symbolized by Daytime. A lot of the songs seem to use "days" as a placeholder for each lifetime (or generation) as a "new day" to try again. It also works in the sense that daytime bring sunshine and his curse is what brings Oscar, this generations "sun", into the fray. Additionally, works as a perfect contrast to Salem's night and her frustration that he keeps coming back over and over again.
or tl;dr you know it's bad when i start making diagrams ooh boy
Anyway, yeah, it makes complete and utter sense why Ruby and Oscar are setup as they are with just how central they are to the main plot. This story is one about breaking cycles, so having those two have a successful version of the Ozma and Salem situation is just the most natural way for this to go.
