For Sully: Socks - Magic Jade Raccoon, Gizmo - Undead Raccon... Little Lu - Humanoid?
I see Shademaster and some Doc. there, so maybe we will FINALLY get to fight Undead and Mechanical tamers. For the first time ever, Anub Idol might not be the pet to go.
Rascal bot seems to be extremely powerful opener if it's speedy at all, just stun'n'smash till you get down for first time and explode for effective triple base damage. Though... Fiendish Imp will eat him for breakfast.
Chi-Ji seems quite nice, Feign Death is sweet skill, and a Reflect too, with Flyer speed on top and Alpha Strike. This will be powerful combo breaker. About time we got useful flier, got tired of Ravens and Moths.
Niuzao, got Wish... I don't like it, at all, I can already see him paired with Crawdad. Other than that it seems just... simple, spam Trample and use Niuzao Charge if enemy hit dodge/burrow/undead.
Xuen seems extremely strong. Moonfire is high damage attack, Spirit Claws is high damage attack (not missing with Moonfire), Prowl with Feed seems very potent. Vengeance seems interesting if not rather situational against mechs. And I assume he will be super-extra-mega speedy since he controls time, calling 1150h/280p/420s.
Yulon seems so-so, a copy of Emerald Proto with Life Exchange instead of Dream is what I'm looking at choosing skills. Celestial Blessing seems interesting, 4 rounds of -50% means basically evading 2 hits if hit 4 times. Since you waste one turn setting it and second swapping, it is good mostly for tactical switch or against swap teams. Hopefully will activate before Minefied, it would be nice to see a proper counter to that.
Moon is a beast that is strong against Flyers and that's about it. Might be good if you'd like make a Moonlight based team, and counters Ravens/Crows Darkness team.