According this guide https://www.spacetimestudios.com/sho...de-Stat-Points
rogue get benefit from main stats (dexterity) in 5 stats value , Warriors from str in 3, mage from intel in 4.
And the damage you get from main stat (dex) is higher from any other class plus you deadly hitting from the huge critical.
I believe with your +% from the mythic set buff, you can cut some off your dexterity and put to mana, is 500 mana anyway.

I'm mage, I have put 100 points main stats to dexterity, plus +25 from passive, I use mixed equipment for str and more dexterity(not new mythic set), my main stats stay low 1400 , but with boss damage I can kill every boss and farming new maps alone.
Why do I need full intel if with mixed stats I'm ok?