You could, but i personally only got 2 problems with it.
Extremely slow leveling and skills don't animate with the character most of the time.
When you improve you speed to cast faster you only do one slow animation instead.
By then you casted 2-3 times. And your character only did one slow animation for that skill.
Same goes with your primary attack animation. Its just bad design.
Character animation moves slow but you see your damage on the enemy going fast.
Just try it, loot is plentiful and you can enter the dungeons as many times as you want.