As an aside, I'll eventually introduce dragons back in the world and establish a lifecycle that's very close to a eusocial society, ala naked mole rats or insects.

A single fertilized dragon egg will shed spores that will produce reptilian kobolds. They will work based mostly on instinct to establish the correct environment to hatch the egg. Upon hatching, the dragon inside will consume the kobolds (who willingly stand there and get eaten) as early sustenance and grow.

Depending on the environment created, the dragon adapts en-ovum to be a fire-adapted type, water-adapted type, etc.

Unfertilized eggs laid by a dragon are laid in hatches and produce dragonborn. These are sophonts who, in the presence of a dragon, receive a mental/pheromonal override and act directly in service to said dragon. If the dragon ever abandons the area, the dragonborn recover their sophont nature and act of their own accord (establishing small-scale hierarchies and cultures).

I've got an early encounter planned where the players will start encountering small fire elementals as a result of an egg-hatching process opening a portal to a fire-spewing dimension burns down the forest they're travelling through. Inspired by California wildfires of recent past!