Yeah, it might be good in the short run for people who don't want to blow through 20 raid completions - but it invalidate the rarity of some loot. There should never be a random gen loot with better or similar stats than raid loot. It destroys the purpose with even bothering running quests.
I'm not against the loot gen effects; I like finding good combinations - but these combinations should never be superior. Smaller yes - situational for sure. But not so they're so good they completely replaces anything you can think of. That is what happened after Shadowfell and it is going to happen now. My hope is - despite that it might make some of the stuff I've pulled so far less valued, that Turbine can fix this.