Will our artifact weapon be our ONLY weapon from here on out?
I see no reason to ever need to ditch the artifact weapon system now because lore wise there is no other weapon than can be made that can be topped in Azeroth.
Blizz can reskin our artifact weapons now until the last xpac hits and they certainly can keep adding artifact points and talents to it.
I see no reason to ever go back to getting nameless swords and staffs from now on.
Yeah we could go to argus next xpac but it still will be just nameless swords and staffs with little emotional attachment and i must say iam rather fond of my new artifact weapons i have grown quite attached and see no reason to ever have to stick them in my bank for a slightly better nameless green!