Why on evrey post I see ppl write that wm will change and become useless....
Will this affect the gameplay :
Its the other way around. WM is gonna be more useful.
Right now, with a melee only build, you get 111 wpf in the weapon skill of your choice. Sure you can get 150 or 160ish if you max your weapon master on a balanced build, but you could also put those 6 or 7 skill points into ironflesh, or convert them for more stats.
I still use weaponmaster as a melee. But honestly I had a better gen as a 27/12 armor crutching puutie with maxxed ironflesh instead of WM. They're trying to make dedicated melee characters have more of an incentive to get it.