If there was a 3rd branch for thief, bowman or pirate...

For pirates, I am totally seeing vikings with weapons to beat monsters with. Not specifically blunt weapons but something. It's time to forget about ninjas versus pirates (I like pirates BTW), it's time for assassins versus vikings .

Vikings, in your sense would seem a little more like a Warrior to me.

With all classes in mind, you basically have most of the close/long range aspects.

I'd still like to see some kind of Dual-Wielding effect; especially for Dks.