A couple of other changes to Shams:

Elemental Oath: Grants 5% spell crital strike to raid members - thats a buff.

Totem of Wrath: Now grants a flat amount of spell damage, and all enemies in its radius have an increased chance of being struck by criticals - hmm thats a nerf. Previously it was 6% of spell dam, which meant it scaled. And now enemies have to be within rangeto get the crit debuff...

Not good changes IMO.