Gnarled Scarhide has been good, but I think we all knew that.
Scourge of Fleets has pretty consistently been a one sided upheval, and replaying value creatures is usually not a life or death factor. Even against pod you're likely getting a few dorks with it and their current pod target. He's been okay but not stellar in pod, since that's usually more of a 3-4 color brew around here when it's not just GB zombies.
Master of the Feast is the real deal. He gives them cards, but damn does he kill people quickly. Reminds me of Abyssal Persecutor, but can come down t2 off a mana dork (I added another birds of paradise) and doesn't demand specific card. DO NOT play him in midrange, you'll regret it.
Mogis's Warhound has been good. He's nice playable card advantage for the aggro deck. His creature mode sucks, but he's seeing play in the non double strike decks, so that's gotta be something.
Ajani's Presence has been good. It doesn't usually get strived, but I like that it's there. Oddly enough I'm not sure the +1/+1 comes up that often. I'm also trying
emerge unscathed, and it varies from draft to draft which one is better.
Harness by Force has been great, though it got switched in from threaten, so it wasn't hard. You might not think it'd be strived often, but if your sitting on 5 it might be worth waiting, since the double threaten is an insane amount of damage.
Flamespeaker Adept has been amazing. Really good red heroic creature, and drawing those cards is nuts. Also slides past all the x/1s, of which there are a bunch in the average cube.
Haven't seen
setessan tactics yet.
While new ajani might seem boring, he works really well as a stallbreaker and card advantage engine, two things I think the GW littlekid deck needs usually.