To understand it with the cost of skill points... If I was a lvl 80 Mage...

I would use 1 skill point for Fireball... then 1 Skill point to unlock the Impact upgrade (charged Fireball knocks down and stuns enemies for 3.5 sec) and then 1 skill point to choose 1 of the 4 perks that would be available.

That is going to eat up a hell of a lot of skill points but fair enough on coming up with a way after all these years to mix up the skills XD

If you haven't considered introducing gear or pets that offer additional skill points as a passive ability yet to go with implementing the above idea then it needs to be considered XD


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