Glad to see the new version, even if it's still being polished. I generated a few worlds of my own, experimenting with some quick raw modding of my own to the vanilla kobolds. I got the starvation problem quite a bit, but that issue seemed to fix itself when I set kobolds to build cities as their default site. Just thought I'd let you harder core players know. EDIT: Looked at the new raws. Seems you already knew.
From what I read in legends, kobolds can become vampires (usually by being cursed by a god, since I set them as Religion:Pantheon), and can become lycanthropes. One world of mine featured a dwarven weredeer who really got around, infecting a lot of kobolds.
One thing that was kind of sad in my legends: Kobolds can almost become necromancers. A kobold can become obsessed with his mortality, be taught the secrets of life and death, and write books, but they won't be listed as necromancers, and they'll still die of old age. I've seen a couple cases where a kobold becomes a master to his kobold student and back. One took on a human student who became a necromancer. That particular kobold wrote "Victory and the Kobold" as his first book, along with other kobold-related literature, but after training his human apprentice, he started writing about humans a lot before dying of old age. I could really feel the sad envy.
I'm certainly curious what gets in the way of their necromancy.