So. Seeing as Griselda and the libertus have very short life spans. Is it possible he's going to salvage a zoacrystal off the dead bodies off of Jabir Ibn Hayyan and Luggnagg de Krumeggnic to keep her around?.....or could it be that he's just going to kill them and leave it at that because Agito might be aware that they were behind Richard Guyot's revival as a rogue and attack on the mansion? Payback?

It's hard to say at this point... We don't know how much Agito has changed as a person. But this arc will surely show us.

 

I honestly think he's there to take them out. He's got a greater number of Libertus with him, and no relic under the base to try and retrieve.

 

And since they know these guys are behind the attack, it could very well be motivated by revenge to some degree.

It could be he knows about Apollon and that Apollon is targeting the rebels and wants to get their first for whatever reason.
Things could get really interesting if Apollon shows up as well.

Would it make much of a difference if Shizu was given a actual Zoacrystal?  She was processed into a very advanced prototype form of a Zoalord to being with.  Without regular treatments her fate is sealed even if she was given a actual Zoacrystal.  The only reason Murakami lived after what happened in Mount Minakami is, because he was reprocessed into a full Zoalord at a genetic level.

a full zoacrystal is a much much better super capacitor. it can hold far more energy.

this is far more capable of sustaining life and shizu could be adapted to take advantage of that, I am sure.

So.... if Agito did manage to get a true Zoacrystal for Shizu, wouldn't that make Shizu a target for Apollon as well? 

It almost certainly would make her a target. Apollon doesn't seem to be targeting the Zoalords because of their importance to Chronos.

 

From the way he talks, he only seems interested in collecting the Zoacrystals and has no interest in the Zoalords they're implanted in. I bet that if he could, he'd turn up, yank out the crystals and disappear again without fighting his target.

 

It's possible that he needs the Zoacrystals to increase his own power and oppose Archanfel.