I've been using the hybrid stabilizer mod for a while. Even though I thought they had been patched out, I was still getting hybrids born in game. It started when I had a spellcaster-merman and his mer form was all messed up as spellcaster was his primary form. I started using the hybrid mod and was able to play him as both. Still do. Then I had an unfortunate merman-vampire. Fried fish anyone? I have a vampire spellcaster too. That's how they were born in game and I've been using this mod since then so I can continue to play them that way. I'm glad I can do the same for were-hybrids too. I really enjoy being able to weird dual powers and without the mod, being able to switch UIs/skill trees wouldn't be possible.