Oh! I know. Instead of having the Daltonite's lair leading to the Zeal Ruins, you go to the place you fought the Head Daltonite and apprehend some of them. Everyone seems content, Schala says her whole ending dialog, and you can get her to join the party. Then, if you talk to the people at Surviving Village, they say they think something's suspicious with the Daltonites or something. If you go back to the Daltonites' Lair, you can find the deactivated Skyway. If Schala's with, she activates it, and it takes you to the Zeal Ruins, the true lair of the Daltonites. There's a side passage their that leads to Zeal's treasury, but it's guarded by the mirror, who's an optional boss, and only does funky stuff like create dark clones of the characters and use life draining spells and whatnot. If you defeat it, you can access the treasury, which contains the Jeweled Knife and Rainbow Gemstone. (among other things) Then, at the end of the dungeon, you face off against the Golem Overlord/Mecha-Dalton, completing the quest. (Maybe there can be a flashback sequence from Schala's time in Zeal, if it's not too much trouble...)
What do you think of that idea? Also, I updated the tech list with descriptions for almost all of the techs. (Still need a few more Triples, though) However, Guardian for all allies wouldn't make sense, since Temporal Guardian and Sacred Protection already do that, plus giving an added bonus...
(Oh, and once the tech list is complete, I'd really like it if someone could do a tech-by-tech review of it... It would take a long time, I know, but it would really help and give lots of good feedback... If it's not too much trouble, of course.)
Well, I'll get back to writing script for the new Daltonite addition.