I'm not sure what to have Raidou/Paraiba try. They want to find the nightmare he's been hunting for, and to save the Conditioned and other Heteroprax people on Aratta from the abuses they're dealing with, and to find a way for Grant and the other Diabolin, as well as the Synthetics, to stay in Questing Country since it seems unfair to boot them, and I can't figure out what to have him focus on. (Raidou also has Path to Profit and I think Insight to try, as well as Questing Sense, but they need subjects to use them on.)

Raidou was also supposed to be helping with the Singing Backstage, iirc. He has Siren Magic; I don't know if the proof submitted for Performance Creativity Magic was sufficient or if that would synergize in any way with Siren Magic, but that might be a thing too.

Yukki, I think, wanted to find a way to let the Hecatite homeworld know what their Aratta branch is up to lately, and if that doesn't get them to cut it out possibly expose them more widely. Minako and Cassandra I have no ideas for.