It wouldn't be called "Savage"
Savage is a unique appellation for content that had to be drastically scaled back from its original intention.
Basically it's stuff that was too hard for the testers to beat consistently so they made it optional.
Thus, there won't be a Savage Primal (well, a NEW one might get the appellation, but the ones we have now won't). They'd use a different tag for them.
Like "Ultimate" or "Brutal."