I really like the new set. Should change the format a bit.
They are some cards that will change the format a lot, like the Fossils and the Eeveelutions that we all know about, but I could see some dark horses being in a good deck.
The legendary birds are the main interesting ones. Articuno gives nice 50% paralyze chance, and Blizzard isn't too bad, especially if you ave a Gyarados on the bench. Moltres could be nice. There was a deck on 'Gym that was quite interesting using this that I may have to try. Zapdos's Poké-Power is nice, but the attack isn't. Again, Gyarados can use the damage, but 40 is a bit much.
Scizor is just plain nasty. Special energies are used a lot, so 80 for M is hardly bad. Crystal Beach can go with that for disruption as well.
Darkrai isn't bad either, and will probably be the Darkrai of choice for Darkrai decks.
Rotom seems as though it could work. Activates Scramble, which is a nice start, and can power up all of those Pokémon that discard energies.
Actually, maybe there aren't as many nice looking cards as I first thought.