i think the way to go in arena this season is mana drainage, stats like HP spell power, reslience etc, they dont mean much if your healer or any other mana use it totally oom. So really in my opinion abuse the weakest stat of the arena sets which is always the intel.

Its quite obvious that this mana drain thing was going to come about its exactly why they changed warlocks improved drain talents to just effect life drain and not mana drain anymore. (changed in 2.3)

go 3 or 4 if you can get them SL warlocks and a disp/holy priest, i would take disp over holy for the buffs to the disp tree make them alot stronger if they are focused.

Dot up keep pets on people at all times (stops them running out of combat to drink) 4 felhounds sucking off every buff they have will be very useful against teams, and dispite what people say the AI for the felhounds debuffing they are very smart its the silence thats rubbish, just instantly silences soon as they see a cast. And mana drain = win. Also has anyone knowticed a but with succi being able to pull rogues out of stealth if you set attack target before they stealth?