Originally Posted by
Zyranthian
You wont vendor them, that was the whole point of the whole "We'll make it make sense" comment, there'll be some kind of ingame reason why you wont be using them anymore.
Its not going to waste though, because you get to use those traits and that weapon and enjoy the fruits of your hard work for the next 2 years? May as well say getting gear is a waste because at some point you're going to replace it. Artifacts are part of the story of Legion, so they stay in Legion. Then, next expansion, there'll be something new and cool to play with instead of the it having to deal with carrying over baggage from past expansions. If they carry over everything from every expansion the game just ends up a bloated mess again and they spend more time trying to keep legacy systems relevant and less time working on cool new stuff. Personally, I'd prefer cool new stuff.