You're going have to re-breed Arcanine, since one of its good moves, Close Combat, is one if its egg moves. Dig is also terrible competitively, since it's so easy to get around. And what purpose does Aerial Ace serve? I don't see much use of it; use ExtremeSpeed for the priority.
I had Aerial Ace and Dig for coverage, i knew someone would tell me to change it's moves :P but yeah i'll re-breed it :/
Hydreigon has no need for the Power Herb since it has no charge-up moves. I think you were referring to the White Herb? A Choice Specs or Choice Scarf is a better alternative because of the ability to either hit hard or fast right off the bat. If you use one of these items, consider U-turn somewhere on Hydreigon.
Yeah that is what i meant lol... I hate getting locked into a move, but i'll change the item and replace Surf for U-Turn.
If you can go to the Dream World, try and get a Dragonite with Multiscale; it should be the primary ability to be used. Or you can wait till B2/W2 where you can potentially get one in a Hidden Hollow:
-Dragon Dance
-Dragon Claw/Outrage
-Fire Punch
-Roost/Earthquake/ExtremeSpeed
Nature: Adamant/Jolly
EVs: 252 HP/44 Atk/216 Spe or 4 HP/252 Atk/252 Spe
Item: Leftovers/Life Orb
Ability: Multiscale
or
-Substitute
-Thunder Wave
-Dragon Tail
-Roost
Nature: Careful
EVs: 252 HP/4 Atk/252 SDef
Item: Leftovers
Ability: Multiscale
Trust me, if i had access to my WiFi, Dratini is 1st on my list (Ninetales being 2nd), so for the time being, i'll make use with what i've got. Also if can suggest a set with SOME Bulk but can fair on the specially offensive side that would be good.
And if you don't mind my asking, why the 4/252/252 spreads? Sometimes different spreads are better to suit the Pokemon's needs. The Vaporeon set you're using should be 244 HP/136 Def/128 Spe.
Tbh i really just want dedicated, non-balanced, easy-to-train spreads. And i know they suit them better, but i haven't the time to re-EV Train a million pokemon.
Anything else wrong? I've realised my team is OU lol (except Arcanine), i guess im just used to it :P