Wouldn’t the next TT storyline a good opportunity to add base Freyr in the game ( in a NH banner ) ? I know he is dead and all but they could use bullshit magic n°457 to bring him back somehow.
Would be probably better than adding him as a random mythic “you remember that guy who helped you and died early in the story 3 books ago ? Well you can summon him as a mythic now”
My guess for the Rearmed is Triandra.