Not having enough interesting abilities makes sense as a valid concern, but like I said a very different one from tuning.
As for the Hati trait it only seems bad if you look at it in a vacuum. Imagine this scenario: BM hunters versus some other spec with strong traits (let's say fire mage for the sake of simplicity, and just assume they have MUCH stronger traits whether it's true or not). If both specs had NO artifact traits leveled at all, the BM hunter does 300k DPS and the mage does 250k. That's a silly way to look at it of course, because why would you try to compare the specs without traits that they'll obviously both have access to? But that's the same thing you're doing when you talk about ONLY the artifact traits being unfair and ignoring everything else. Add in artifact traits to the hunter and mage kits now, and the mage makes up ground because his are stronger, so you both end up at say 350k. Does it really matter that he gets a larger percent of his damage from artifact traits while you get yours from base abilities or talents?
Obviously that's over simplified in a lot of ways, but the basic idea is that for the most part it doesn't really matter that much where your damage comes from as long as it's balanced overall.