Phantast, Jim Burton, you know, the guy who posted just before you did, has already created an Eternal Jessi. She's called "Glamerous Jessi" and she's for sale at Content Paradise last time I checked.

There are a few really good texture sets out there for Jessi. Not nearly as many as for DAZ figures no, but there's more than 5. And I've gotta ask, have you actually bought the Ultimate Face Morphs pack from RDNA or are you just dissing them on principle because you don't like Jessi's stock face.