The idea of increasing damage through the 4 Core stats is fine. What is not fine is that Toughness seems to be the way to go.

Agility is a mess. Attack speed rarely matters because they don't seem to affect spender skills like Flurry and Bladestorm. Basic attack build scales horrible later on and even with 50% attack speed boost, the damage is very lacking. Spell Casting is even worse. You can barely spam any skill for this stats to matter. Lightning sTrike / Ice Spear already cast fast and channel skill doesn't need Spell casting speed.

Agility really needs more!
1. Improve walking speed. Come on, it's agility!
2. Improve Basic attack damage (since it's really the only thing you can spam fast)
3. Back in beta, Agility used to give Dodge chance. What happened??? It's gone?

Wisdom is okay. Alignment chance is good but you only need a bit. Wisdom needs to increase Willpower pool so that spamming spell is more possible.