Flygon:
If you think that BR's did anything less then show that this is the BDIF, you didn't play in enough BRs.
Gyarados:
Nothing from the new set except the heavy Tangrowth attention really affects the deck. Still a solid and easy choice.
Gengar: Giving it a set of new toys to abuse, the most annoying deck in the format will heavily flaunt itself around many BRs.
Salamence;
Who doesn't want to try and take 3 prizes of an E-belted Pokemon? It will see enough play, but little result.
Kingdra:
1 energy 80/20.
Machamp:
Now that expert Belt gives it the ability to 2HKO a lot of threats in the format for 1 energy, this card is due for some HEAVY play. Hurricane Punch doing 80 for 2 heads is soooo much more solid then 60
Beedrill:
140 damage for 1 energy.....FML
SPs (Toolbox, Blazeray, DPL)
No reason not to play them. Not the best match-ups, but still great attacking power for low energy cost and ability to abuse Ebelt.
Uxie/Starmie/Raticate/Shuppet Donk:
People may play them going for surprise factor, but given Spiritomb's addition to the game, it won't be the same.
Lot of others:
Anything else isn't really a threat. Sure there will be Queen swarms, Garchomp, Tangrowth, BlazeBlaze, Gliscor, Arceus, Torterra, Sceptile, Octillery, Fossils, Blastcatty, Abomasnow/Manetric/Giratina stuff etc, but they just won't have the same impact on the format.