Team Snowfire vs. Mascot Yuna (FFX-2)- Unless runic doesn't do the trick.
Team Snowfire vs. Zeromus, Exdeath and Chaos- Zeromus can debuff but that's about it. Exdeath sucks and probablyd oesn't see a turn. Chaos has excellent MT damage but Strago can soften the blow here.
Team vs. Boss Timelord and Belial (No 4D Pocket)- Boss TL is extremely threatening but! Overdrive can be runiced to me at worst, and I don't think Belial lives long enough to be a threat.
*Full Heal
Team vs. Luther (Upon defeat, is immediately replaced with Indalecio and Cyril, then again with Xorn, then again with Profound Darkness)- Okay.
I think Feena needs to blow time gate here, you don't want Luther going nuts with the MP busting. Luther explodes. Indalecio and Cyril are a problem, but: Indaleico pre ToT is not a huge threat. Cyril's WoD is dangerous but Big Guard *should* counter the worst of it. Feena is likely dead to the blitz due to bad HP, but everyone else survives. Long as Strago/Red/Ricardo aren't killed, clearing house is easy. Indy goes nuts post ToT but there is no way he gets a turn.
Xorn does one thing, and that is using his anti buff/debuff move on Celes to knock out the autohaste. Regardless, there's no way Ricardo has a shred of SP by the time this fight is over. That leaves Celes, Feena, Red, and Strago to handle PD. Big Guard+Celes healing should keep the team alive- Red is going to ge ta lot of limits as well due to the crazy MT damage floating around
Team vs. Myria 1 (Upon defeat, is immediately replaced with Deathevans and Barubary, then Myria 3, then with Fou-lu)[/b]- Myria 1 is slowable (Which the team should do). This makes her pretty inept at offense and damage. The fight then becomes the same as before, trying to cut through her HP before Ricardo runs out of SP. deathevans had dispel (and I doubt they kill him before he gets a turn). Myria 3 isn't too threatening by herself, but the issue becomes resource management. Mmm, yeah. Fou-Lu is quite dangerous, but he's not fast and Strago/Celes have the right damage there.
This does hinge on taking a closer look at that fourth fight and Ricardo's SP, but a pass for now.