Frankly all this extra work to get Simcraft up and running for mages at the end of an expansion seems like a waste of time. Then again it's not my time so more power to you.
Now if they could do the same for the beginning WoD that would be pretty helpful.
But, more than likely simcraft will be semi accurate to not even close at all sim for most classes at the start of WoD. I would take it's sims with a grain of salt.