First - Buff damage in Legion raids
Second - All artifact weapon relics should be made into junk items and no longer count towards the loot tables of the old raid drops. It's ridiculous to go back to overtuned old raids which should be in legacy mode now and then get 4 of your 6 drops... only to see you get 2 non-relic items, which btw might not even be of the armor class you can use.
Much like the old relic items (totems, librams, etc) and any obsolete items these are no longer useful other than you can socket them to increase the ilevel of your artifact during a single expansion era - made far less useful after the level squish.