It took some serious getting used to. If you are adaptable, you can still make it work just fine. I still use the same build I was using pre-nerf, just without flameseeker. I believe flameseeker is the cause of the wonky hammer damage. After much use in both PvP and PvE, I am confident this is indeed the case as I consistently take out enemy players with a single well placed hammer. You have to have controlled aggression, and you cannot just hurl your hammers blindly. You need to make them count. Enemies will take to the air in an effort to survive, but I can reliably take them out with careful hammer placement.