It gives you free wpf for the wpf you have on your other characters
so it's really good to have some characters with 10+ WPF so you get more WPF on your main.
If I understand correctly. The more alt you have, the more wpf you get on your main? (it seems a little OP if a player have a lots of alt)
What do you mean by some character with 10 + wpf? like for every 10 wpf on your alt you get 1 wpf on your main?
Which means you can raise many alt to lvl 15 (lvl easy to get) and stack wpf on any class and get the wpf bonus on your main...? sounds stupid.