Just so wrong.......
IMP SF 15 % haste + Meta + Demonsoul
Immolation aura + ( refresh after 30 seconds )
HoG for FG 10 % crit
Inferno + Felstorm
Shadowflamme + ( refresh after 12 seconds )
Hellfire
So I am waiting for a '' you suck, my blabla spec, need moar button to push for Aoeing "
For a pvp point of view, I wonder since when 1 V 1 need consideration. Even in a 3 v 3, 5 v5, or Battleground, Hellfire is not a wonderful spell.