Sure you can edit my stuff however you want. The origin character builds mostly take from the general class presets, but there's a few things in a separate file (like designating race, gender, not being able to edit tags, etc.) Starting skills and equipment for each of preset are in Skillset.txt and equipment.txt respectively, in the public/shared/stats/generated folder.
I'm not so sure about my flesh sacrifice change either. I don't want to make it too similar to Shed Skin with a resistance malus, but if it dropped armor also that could be interesting (though doesn't really make sense). Perhaps if it reduced piercing resistance by 25% it would make the constitution loss a bit more threatening - except not too many enemies deal piercing damage.
Sent you a PM about your offer.
