Sorry, I didn't see this comment until just now!
First, I'm so happy you like my game, and I really enjoyed reading your thoughts on it!
Regarding dragon society: You are correct that eggs/children are raised communally. Dragon males tend to have fertility issues, which is why females take multiple lovers, otherwise their species would have died out long ago. Because of this, they view their clan as one big family, so bloodlines aren't a big deal to them. Heirs are chosen in a ceremony that takes place every few years, when a new group of eggs have recently hatched. The Elders (those who don't already have heirs) choose their heirs from among the newborns. How they go about making this choice is pretty arbitrary, as the MC points out.
Regarding Lana: I'm kind of disappointed with how her storyline worked out. I always intended her to be romancable, as a subversion of the "mean girl" trope, but as I wrote, I found that there was no graceful way to work her into the story until the very end, which didn't leave a lot of time to develop a relationship. What you end up getting on her route is more of an optimistic beginning to an enemies-to-friends-to-lovers situation. I do plan to give her a much larger part in the sequel!
Thank you so much for your comments and kind words!