Blizzard, are you really going to snatch defeat from the Jaws of victory?
There is no better way to disenfranchise millions of players than to make constant nerfs after people have spent $70+ and hours and hours on a brand new ARPG. Also, millions upgrading and fixing their characters just to have it wiped out in a nerf.
This is an ARPG, not an MMO. It is you that have made the mistakes of not properly testing. So don’t punish the player who has done nothing wrong, having an OP skill for a few weeks would have hurt no one, and it would only have spread the word of how much fun Diablo IV was to play.
When PoE makes these kinds of mistake they leave it as is unless absolutely necessary, meaning it would ruin most other players fun if a balance change is not made. Why does GGG do this? Because people feel cheated out of their time and money when they put in days of their time just for it to be taken from them due to GGG’s mistakes.
Wait until season 1 comes out, then make the changes. If you want to buff something and make it better, ok, but don’t nerf peoples builds they spent time and money to play that character.