With Scizor losing access to Roost, unless there is another recovery move it can get (which I doubt) the only way this retains viability is through its role as an attacker. Swords Dance sets with three moves or even the Choice Band/Choice Scarf sets will return. Though losing the option to roost will impact how it is played.
I guess H-Typhlosion gets eruption, which is nice, but probably won't do much for it. Though STAB Ghost and Fire is strong offensive coverage.
The amount of mons that get Spikes or other entry hazards is just stunning honestly. Getting three layers of spikes is gonna be easier with so many distributions. And of course, more Stealth Rock and Toxic Spikes to boot. I imagine that Volcorona has to use Heavy Duty Boots now, along with Charizard, just to avoid dying all the time.
Groudon may have lost Heat Crash but it can still run bulky options, especially with Will o Wisp. Though how good this is remains to be seen.
Also, Rayquaza getting U-Turn. Yeah, that is a buff that it did not need but will 1000% abuse to the fullest.