While many of the mechanics benefit Teval more than Kotis, theres some sick enchantments and sorceries with widespread impact here
Dripping with equal parts menace and charm, here are the best 20 Vampire cards in Magic
If you somehow knew for a fact that both players on either side of you were drafting Mardu decks, it would probably be in your best interest to draft either Sultai or Temur, because you'd get passed all of the best blue and green cards that your neighbors didn't want
WotC suggests that big creatures that are hard to interact with are positive additions to their environments. They might have been thinking of the Avabruck Caretaker / Hollowhenge Huntmaster when they said that, but Im not sure anyone would agree in the case of that card
Other new mechanics specific to this set, Tiered spells and Job Select, are also fun and well represent Final Fantasy, but from a Magic perspective, they are similar to previous existing mechanics