With all the simple likely to be running around, Intimidate might be a worthwhile ability to have for defense.
Landorus got shafted, considering that it can choose between such OP options like Levitate (Rotom-Fan version 2.7, now with 145% more attack!), Limber or Lightningrod! Honestly, its best bet is Liquid Ooze.
Also, all the Js are gonna be justified, all Qs have their quick feet, and the Es are gonna either wake up early or possibly cause you to fall asleep. Sucks to be Jirachi, Jellicent, Jynx (all three weak to dark), Quagsire (gonna be the fastest defensive wall evar!), or even Entei and Excadrill.
On the other side, poor Drought and Drizzle, considering that not only are they slightly overshadowed by Download, but D also only has two fire types (Delphox and Darmanitan) and one water type (Dewgong). Similarly, Gale Wings is left in the hands of Gliscor and Gyarados for STAB priority flying moves. But Illusion is much more interesting, considering the abilities available. Imagine doing something with Wonder Guard and watching them see the non-super effective move impact Infernape.