Yes, alpha is part that, but giving the information to the public for feedback is also done to see if they do want to tweak it before Beta, otherwise the actual proc info and stuff like that also would not be posted. Posting the info of how much damage SA will do on average or the chance for SA to actually proc is still beneficial for Alpha but not top priority on balancing. I love the talent and it actually feels like a talent that is not over budget or to OP.
sounds pretty interesting....