Doesn't make the hunter class any less valid. If anything, based on your view of it, the hunter class would be for more specific styles and far for more effective when your style is. The lack of variety gives way to a more focused and efficient build. If you have a greater variety then your overall build would be too spread out to be effective. Then on top of that, if they have a focus then said skills would only be useful with aforementioned focus. With all this speculation its hard to say. But don't sleep on the hunter class. More then likely the hunters will be the one who kills your morale in pvp.