Here's my thoughts on the new sprites:
Bulbasaur-Love the GS revamp.
Charizard-Simply a beast.
Blastoise-Gained a few pounds.
Fearow-Wonderful pose.
Pikachu-Cute, much better than the beta sprites.
Oddish-Much cuter than DP, and Platinum's was just plain ugly.
Nidoking-King of Beasts.
Arcanine-Best sprite for him yet.
Alakazam-Looks a bit odd, Platinum's was better.
Muk-One word. Awesome.
Gastly Line-They're all amazing, especially Haunter.
Scyther-Looks weird, don't like the head or pose.
Electabuzz-Awesome.
Gyarados-Beast, especially the Red Gyarados.
Lapras-Looks meaner than I remembered, and I like it.
Eevee-Looks cute and ferocious at the same time.
Kabutops-Beastly.
Lengendary Bird Trio-All of them are amazing, best sprites for all of them.
Dragonair-Looks really elegant.
Mew-Cute, hated the DPPt sprite.
Cyndaquil-Cutest sprite for him yet.
Feraligatr-Looks like one mischeivous gator.
Ariados-Another revamp, I like.
Politoed-Cute and playful.
Quagsire-Looks like he wants a hug.
Espeon-Much better than the DPPt sprites.
Murkrow-Nice mid-flight pose.
Wobbuffet-Looks like a ninja in second frame.
Gligar-Finally it's the right color.
Steelix-Bad ***.
Scizor-Looks like a ninja.
Skarmory-Very beastly.
Houndour-Super cute yet bad ***.
Legendary Dog Trio-Raikou's the best, but they're all better than the DPPt ones.
Lugia-Beastly.
Ho-oh-Ugly, head looks deformed.
Also all the OW sprites are amazing, they put alot of detail into such little sprites.