I created this "Reaver" class for myself.
It is basically the Inquisitor, but instead of a staff you use a greatsword, spec exclusively in STR and INT
That is basically a battlemage isn't it? Or perhaps battlemage should dual-wield not use two handed?
In any case for that sort of character you need some speed - perhaps a point in Warfare and the warlord talent so you can get stuck in and keep going. Anything for a bit more AP.
I'd suggest not using polymorph at the moment - it is so OP it isn't fun. I imagine (hope) they'll tune it down a bit in the next patch.