Anyway, unless you can get OVER 45% crit, your crit from 20-45% basically has the same impact on your dps, you won't see any changes or benefit unless you go over 45, and well over at that.
with 20% you have chance that every 5. spell will be a crit. with 45% every second..
i see in your talents that you dont have improved fire blast talent. i dont understand. anytime i cas a fire blast its a crit and when i cast it ater a fireball crit i have a hot streak. i thought fire is about hot streak and crits bcs pyroblast is a massive dmg. if its a crit its massive massive dmg..then you cast a fire blast and you have hot streak again.
maybe its true...: crit to haste..the only way how to know is try it