The IFCC's second call

[Psyren]

I don't see the IFCC having too much of an interest in this event.

The giants are a hindrance, but the party won't have too much trouble defeating them, even without V's help. Narratively, my guess is that this encounter will add to the Andi vs Bandana dynamic which will ultimately remove the Mechane from the playing field.

This. The giants' narrative purpose is to add pressure to an already volatile morale situation aboard the Mechane. If Rich wanted them to be a more serious threat, he wouldn't have had three clerics fail a will save