So apparently

Direcr hit is 1% per 38 and +25t bonus damage (static)

Crit is +1%/1% chance/damage per 108 (+ innate 5%)

Spell speed is -.01 on caster per 68-381.
So if your spell speed is 1781 its actually 1400.

We wont be seeing good old 2.64 cast times till 2300 spell speed or 2285 ss.

Seems like until we can get crit to 2500+ its better to go SS/ Direct hit since it scales stupidly well.