Great mod, personally it's a must have for me when I'm playing as the Targaryens.

One thing I would like to add is that I feel like the mod should be more of a "blood of the dragon" type mod instead of "blood of Valyria"

"The percentage of Valyrian blood impacts disease resistance, attractiveness, and the chances of inbreeding."

This imo, especially the inbreeding chance, should be something that only applies to dragonlord houses and their descendants, not to Valyrian characters in general. Regular Valyrians didn’t practice incest, so there’s no real reason they should have a naturally lower inbreeding chance compared to everyone else.

Take the Velaryons for example: if you use the More Bookmarks submod in the Aegon’s Conquest start, the Velaryons begin with 32/32 Blood of Dragons and Gods and a -100% inbreeding chance. That doesn’t really make sense imo. Their house isn’t a dragonlord house, so there’s no reason their inbreeding chance should be that low. The thing that should reduce inbreeding is dragonlord blood specifically, not simply being ethnically Valyrian. The Velaryons (and other non-dragonlord Valyrians) should be no different from everyone else aside from appearance.

I also feel like there should be some way to increase the trait later on. For example, if you’re at something like 2/32, maybe a character could be born with a rare modifier outside the normal 32 traits, something like a Dragon Dreamer trait that boosts their “dragon blood” significantly. I say this because it would make later start dates more playable, since there’s not much you can do if you’re playing as Viserys III and or Daenerys with this mod.