Dominion APs are already mostly fine.
The stats on Blackfire torch are just overwhelmingly strong, and I honestly wish you had come and asked people like myself and some of the other guys in the DD chat first or some of our tourney players first.
Dominion APs are already strong enough as is.
I feel as though you are trying to push our APs over the edge into OP land with some of these items.
Ahri, Akali, Anivia, Annie, Elise, Fiddlesticks, Gragas, Heimerdinger, Karma, Karthus, Kennen, Leblanc, Lux, AP Malzahar, Morgana, Orianna, Rumble, Soraka, Syndra, Twisted Fate, Veigar, Viktor, Vladimir, Xerath, and Zigg's all need help and have seen very little, if any, tourney play. (elise is new so you can keep her out)
The most common AP's in tourneys are Brand, Cass(bot only), Diana(bot only), Eve(ZaberZ only), Fizz, Kassadin, Kat, Mordekaiser(bot only), Ryze, Swain, Zilean(Pooterss/MMKH), Zyra.
AP's need a little help, not to mention itemization is fairly stale currently.
Edit: Updated the list. Removing "tanks" such as Cho, Galio, and Sej for the first list and Amumu, Leona, Lulu, Malphite, Maokai for the second. As you can see, this tips the scales further into list 1's favor. I would like to also point out that several of the viable champs are only viable Bot(Cass, Diana, and Morde[I actually question Morde's viability now with the DFG nerf])
Gragas hasn't been played bot in ages, regardless if you "meant to play him" or not. Ahri hasn't seen play in months because of the repeated nerfs to her due to her dominance in SR. Feedski has yet to play Leblanc in a tourney and MMKH hasn't touched her in months either, opting for Blitz, Singed, or Talon.