So, this may sound silly, but now that I've finally had a chance to play with them, they do actually feel a little Kith. Sure, Scorpion is the obvious "Kith & Dany adopted a baby and called it Dracarys Warleader" control/burn/counter faction, and Ponies do look at first like a simple aggro faction, but hear me out.
Is the former world champion Kith pilot claiming he wants to run a bad deck to prove it is not terrible?
I think it is because they are both purple.
Unicorn will often sacrifice key battles, maybe even allowing 3 early province breaks to their opponent. Just like Kith ceding all the planets. Sitting on 2 honour feels a bit like playing with a bloodied warlord (Kith's life story). They are the closest thing to an economy faction, fairly swarmy, and even attack is often not just brute force but finesse aggro and creating multiple threats, forcing overcommits.
Or maybe it's just the purple thing. When they win Worlds 2018 that'll be another similarity I guess