
Scipion del Ferro RPG Superstar 2011 Top 4 |

I could see a 3PP offering this, but not a full Paizo product. Unless it showed up for special specific circumstances (like the Bloat Mage or Hell Knight prestige classes) since archtypes require relatively few words for what they do.
Making a variant version of a feature that is already rarely used just seems like a poor plan. However, I will throw out there, I had an idea for the RPGSuperstar of an archtype for Shadowdancer that removed the shadow companion and offered superior shadow dancing skills.