Allowing the axe/spear is a good idea; I will add it in. I think I will clarify the restriction on "small weapons" (a one-handed hatchet should be fine, no an eye-axe of course).
The complexity, I think, is on par with the Assassin. As usual, the GM can rule which abilities are in and which are out.
For a totally martial class, one could remove the entire "focus powers" lines and add in some spear abilities. That does remind one of the Amazon class from Diablo II (sans all the fire arrows and over-the-top magical exploding/freezing arrows).