Not only do you need to be lucky enough to get a plan to drop, you also need to be lucky enough to get the plan to craft the gem you're going to need on top of it. If you managed that, you now need to make sure you don't salvage your level 70 white items, because you'll need one of those. Then you get to start grinding a specific area to try to get the legendary crafting material. Which means you aren't doing bounties, you aren't getting your act caches, and you aren't doing rifts. Wasn't Diablo 3 supposed to get away from farming one boss over and over?
Farming Magda for 4 hours to get one Tormented Soul only to find out I can't even craft the gem I need for the set was so completely disheartening that it stopped me from playing from playing for the majority of the weekend.
So whenever I do decide to go back, I still have to grind for who knows how many hours to get the gem plan I need and then look forward to another 8 hours or more of killing Magda over and over again. And that all assumes that the first time I craft the item has a trifecta so it's actually an upgrade.
Who thought this was a good idea? Especially when we can't even trade gems or legendary crafting materials with the people in our party.