I know this is subjective and only my opinion, but I know a lot of players agree with me that those BM hunter artifact weapons are SO UGLY AND LAME! They look absolutely terrible! The Challenge mode gun from WoD is a thousand times better and even that is pretty lackluster! Why are these weapons so bland when all the other classes (aside from Shadow priest) get these gorgeous and highly animated weapons?
My conspiracy theory that I really hope is true:
"Each BM artifact weapon allows the hunter to tame a new Spirit Beast specific to that artifact weapon."
-The new spirit beasts will be completely new art models similar to how Loque Nahak was introduced.
-OR-
You choose your favorite pet and can now apply various particle/spectral/glow effects to it. Can only be applied to one pet at a time.
Something like this is the only rationale I can think of for such terrible artifact weapons. Similarly I expect that the shadow priest weapon will alter the appearance of shadowform.