Worst:
- Ryne gets another half-baked idea and pushes ahead.
- It blows up in everyone's face and results in 1-all of the third wing's bosses.
- This leads to Gaia having to sacrifice herself to fix the situation.
- This is played off as bittersweet, and the weight of Ryne's failure is once again overlooked.
Second Worst:
- The writers continue to treat Ryne's failure as being inconsequential.
- That's it. That's the last we hear of it. Moving on!
Not What I Want:
- That "ice" crystal that Ryne wanted to make into necklaces for herself and Gaia?
- That's Shiva's still living core, and the consequences of that should go without saying.
- But I'll say it anyways: Remember what Bahamut was doing beneath Carteneau Flats?
- Well, think that, but also with a lot more tempering.
-- I'd find this interesting, but I genuinely believe this would hurt Ryne's characterization to go through. She doesn't need to suffer like this.
Acceptable:
- Ryne acknowledges just how dire her failure really became, and vows not to let it happen again.
- Ryne still believes she needs more power to ensure the above.
- Ryne is proven right. Getting more power DOES save the day.
-- I'm not a fan of this, obviously, but I'll take it over the above.
Good:
- See above, but Ryne is proven wrong and acknowledges it.
-- To elaborate: One idea I had is that she failed to control Shiva because Shiva's goals were entirely at odds with Ryne's.
-- Ryne summoned Shiva with the intent to have her die, but Shiva was born with the goal of using her power to usher in peace.
-- In other words: Ryne failing is the result of her flaws, not her power level.
---EDIT 03: A neat idea I had here is that Ryne, having solved the problem behind Shiva's summoning, sees us backed into a corner for the final raid boss and willfully intervenes to support us... as Shiva. And it actually works because she's changed her approach in trying to control her. Bonus points if the writers acknowledge Shiva as a character distinct from Ryne herself, and have them working together for this. That said, this might just step on the toes of the whole "More power wasn't what she needed" thing, because this is still more power, y'know?
- Ryne also acknowledges her habit of charging ahead on a whim has only ever caused her trouble in the past.
- She resolves to take a more measured approach in the future because of this.
Great:
- See above, but Ryne also acknowledges that she's been pursuing power as a crutch instead of growing out of her bad habits.
- In other words, her pursuit of the Oracle's power may not have been as pure-minded as first presented.
- And her attitude in regards to summoning Shiva was because she let that power go to her head.
- She resolves to stop seeking more power, instead trying to use the power she has more responsibly.
Best:
- See above, but Ryne resolves to permanently give up the Oracle of Light's powers, both because of the aforementioned power-acknowledgement and because those powers are no longer needed.
- Minfilia's soul is—somehow—sundered from hers, allowing her to return to the lifestream. Could be Eden what did it. Could be Hydaelyn. Could even be that their souls never really merged.
- This is setup for Ryne's appearance on the Source in 6.0 as an older and more experienced version of herself...
- ... while also being setup for Minfilia's return in the buildup to dealing with Zodiark. This is both a final new lease on life for her, and a chance to return home—not posthumuously, but for real.
Just Self-Indulgent:
- The WoL gives Ryne and Gaia a crash course on Primals 101. The purpose? To drill into their heads that summoning primals is a necessary evil in only the best case scenario.
- And in anything other than the best case scenario, it's always a net negative for the world at large.
- This is just because I'm not too thrilled with the whole "Summoning Primals for Fun and Profit"-esque approach Eden has had thus far.
- It's like everyone involved just sort of forgot fundamental details like "Primals suck up tons of aether from their surroundings" and "Primals irresistably and irreversably bend the wills of those around them".