Sorry for the delay in getting this out, things have been things and I've been having trouble staying on top of stuff. But heck it, let's go, time for another Nitpick November, Number 8!
And here's what I've got for y'all today: despite establishing there is a relationship between Semblance and Aura, that connection feels half-baked at best and poorly explained, especially when various Semblances are brought into the picture.
So, as we all know, RWBY describes Aura as being one's Soul being channeled, either for offensive or defensive purposes. Semblances, meanwhile, are described as Aura being made to take on a more tangible form, explicitly so in the World of Remnant video on Semblances and Aura. So there is no arguing there isn't a connection, right?
Now, in general that isn't all that big an inconsistency: the series may go back and forth on things, but the general idea is that one can use their Aura like a battery of sorts to fuel their abilities, and as Semblances are a part of one's Aura, that's something their Aura fuels. All well and good so far.
But then we get to the idea of Semblances that work oddly and things start to fall apart, I feel.
For example, Qrow and Ironwood have passive/involuntary Semblances - Qrow can influence/spread misfortune around him, even if he doesn't want to, while Ironwood's Mettle "strengthens his resolve" (so dumb...) without any explanation about what triggers it. But like... how does that interact with their Aura? It should, given Semblances comes from Aura, but like... does that mean their Aura is on a constant drain from having a passive Semblance that can't be turned off, or does it just trigger whenever their Semblance does something? Or does it just not drain their Aura at all, despite Semblances literally coming from their Aura, which I wouldn't put past the writers?
What about Yang's Burn? She gets stronger and deals more damage the more damage she's been dealt, but we tend to see her activating her Semblance at critical Aura levels, right? Wouldn't it make her weaker overall to be using it at critical because she's got less Aura to power her combat with? Or is it just more powerful regardless of Aura levels? I know in-universe Yang's been taught to control and use it better, and that her prior usage was overall iffier, but it still doesn't exactly explain what sorta relationship her Semblance has with Aura levels.
It's just stuff like this that bugs me sometimes, where they want to do stuff like Ki or Chakra, but also wanted to get so expansive with options that it makes figuring the ins and outs of the two's relationship so very complicated. Especially since other series with power systems like Ki and Chakra didn't go so crazy with stuff like passive powers that would theoretically be a constant drain on their energy.