I still find Battle Fury useful, and tend to keep at least one copy in most builds if spellpoints allow.
Its useful for trying to stack or guarentee secondary effects (since you get to roll the effect die on each attack), so it can bolster laying Burns, Rots or Bleeds and increase the odds of landing a daze/stun. Taint is especially nasty to land multiples of in one series of attacks (2 Taints will give a 6 life loss on top of the damage of those attacks.)
Adramelch gets really good mileage out of Battle Fury too, 6 dice base and a 5+ fire chance on each swing with potential to land 2 per. Dire Wolf is pretty solid too, he gets blood thirsty on the first attack and two bleed rolls. Even more on on his first attack if he is a BM pet.
I also use it with a high pierce creature like Brogan or a Dark Pact Slayer, (or something bolstered by a Sacrificial Altar) to cut through a high armor conjuration or creature more quickly. Pierce applies to every attack, so if you find yourself needing to get something like a Battleforge, Enchanters Wardstones, Iron Golem, Wizard Tower or whatnot removed ASAP, using Battle Fury with a creature who has high natural pierce can be a time saver to get it off the table faster.
So, Battle Fury isn't the Auto Include x2 that it used to be but I still find it to have uses.