Initial thoughts on new masteries
The offense tree feels very nice, but is a little linear. I like the idea of a talent with a trade off, and the spell weaver talents. The defense tree has some very interesting choices in it and is open for specializing against a specific type of damage which I like a lot. It does have an issue if you want it as a secondary tree though. The bottom of the tree just doesn't sum out well. I would say either another single point talent in tier two, or give the hp/5 talent a 3rd rank. That way you can get to 8 in the tree without having to take a single point in the auto reduction or neutral monster reduction talents. Utility has some compelling choices between either keeping up in gold/xp or taking more mana and cdr, and seems to flow well as a second pick tree.