I was expecting this:
but got the darkening reflected back at them.
I'm 98% certain that her and Rian are Kira's parents, given that the Fizgig live in Stone-in-the-Wood and she can talk to all the creatures even before the visions seem to hint at that more directly. I also felt that Brea and Kylan are potentially going to be Jen's parents, even though Kylan is a more minor character still, his connection to the more learning and ethereal things make it seem like he'd be more likely as Jen's father than Rian.
Also, while they aren't spoken about directly, for anyone who's read the follow-up comic to the film, the way that they speak to each other through the fire and touch it without burning when they do is actually REALLY interesting, because it seems like they have some connections that they're establishing between the Gelflings and Firelings even without introducing the latter since I'm fairly sure that they don't interact for hundreds of trine still.
Also, I'm wondering if we'll get an origin for the Crystal Bats from the smaller Ascendency in much the same way that we did for the Garthim from the larger ones. It definitely came to mind with the one Aughra was using to spy of the Skeksis.