I actually agree on the choice of Kaleos as well (this coming from someone who's well aware of the power disparity). Cards like Lavaslasher and Mana Deathgrip are going to hit Reva pretty hard IMO, so the ability to place minions conservatively is going to come in handy more than it ever has.
Also, placing high-value minions like Kindling, Owlbeast, 4WM, etc puts it out of range of a ton of removal (Egg Morph, Punish in some cases, Pings, Phoenix Fire, so on and so forth). For that reason I always felt Kaleos might be a better pick for Arcanyst decks. Blink also mitigates a lot of reliance on Juxtaposition and MDS.
Anyways, I like Kindling. Absurd combo potential and strong by itself as well. I feel like someone's going to break it... I have some fun deck brews I'll post soon.