Fenrir could make for a nice Earth/Ice Primal.
Shame she was already cast aside as fodder in Snowcloak... Thought given Fenrir seems to be a species of wolf in Eorzea, it could be interesting to have a pact of wolves happen upon some crystals, howl at the full moon, and accidentally summon their legendary pact alpha. We'd need Papalymo back though, just so he can make a snarky remark about how seemingly everything has a Primal now; "What's next, will ladybugs be summoning a Primal?!" for a nice Magus Sisters teaser.
Alternatively we could always just have a Princess Mononoke kinda thing.
