Okay, that makes more sense. Can't say I'd heard OP being used in such context before, so I misunderstood what you meant. Still don't think I agree completely, but I can see what you mean.
And indeed. It could very well mean Twilight was meant to be the Bearer of the Element of Magic or has some even deeper connection to the Tree or the Elements. I would imagine they have a plan, but I have no idea what it is going to be at this point…>>445733
Ah, yes, that would have been nice, wouldn't it? Though Blueballs I personally think is just a remnant of the past in some way and not actually a prince like the Princesses are.
Twi was Celestia's personal student for a good few years, so I can't say I'm really surprised she isn't exactly lower-tier. But it could have been nice, for sure. At least she doesn't have a magical mane like the original princesses. …yet.