Unfortunately, I think this was just a question of logistics. They needed a partner Commander for the UW fliers draft archetype, Radiant was already established as caring about flying.
And
Sosinna and
Kinidiern could've worked for those~!
Maybe
Sosinna could be used as a blinker sort of creature when you have a flying critter around (as a reference to her being exiled with Xantcha) and
Kinidiern could've actually still worked if given that Radiant card ability and could've been additional lore points for the set! And they wouldn't have looked weird with Partner... coz well, it's one of their featured things back in the
Planeswalker novel.
*sighs*
Who am I to talk tho... I'm not a super biggie gameplay person (stopped playing the cards in Time Spiral, went back for Dominaria, and started Arena back in July) and I've only built janky Standard UB fliers decks...
Oh well, my only "silverlining" about this inclusion was the reaction to that Radiant Commander Legends card.... a lot of them I seen thought that her OG was much better and had doubts of putting her in an angel/fliers deck
_________________________
P.S. The whole set has been
SPOILED. Are we not getting the usual themed decks like before or something?
Coz, yeah, I pretty much only need
Liesa from all these and some pieces here and there for my "Handsome men in Magic art collection that are not in mythic rarity"