Check the other thread out. MotFW only has a chance to generate 10 RP, not 100.
I honestly don't think that is enough to make 2H Frost viable. If it was something like:
'While wielding a 2-handed weapon, your auto attacks have a 33/66/100% chance to increase the damage of your next Frost Strike by 5% and reduce its runic power cost by 5. Stacks up to 3 times.'
Back to the topic, Frost (and Unholy) tree(s) have gotten very little changes. Hoping for alot more changes or I might have to roll that Warrior!