Here is my humble suggestion:

Give hunters dual wield. That alone would make them much, much more competitive.

You could mess around with flashier bow type stuff, but I think the reason hunters are so weak is because they give up the classic melée class advantage (dual wield) and don't get the burst/malediction/damage reduction potential that the other single wield classes get.

So there's my Santa Zulg 2011 request: give hunters dual wield