IMO Terrakion has taken Excadrill's place as "the physical sweeper". With Rock Polish and Swords Dance, Terrakion is very much capable of obtaining that +2 +2 that made Excadrill so fearsome. While in most games, you'll only be able to obtain one of those boosts, one is often enough. It seems that teams are gravitating towards either heavy offense or full stall. Well guess what? Rock Polish annhilates heavy offense and Swords Dance lays a beat down on stall. Choice Band Terrakion is also an absolute monster. The only safe way to beat it without revenge killing is to use Slowbro or Mew. As well, the Choice Scarf set is now more viable than ever. It still revenge kills Salamence, Volcorona and crew as always. It now no longer needs to worry about Excadrill outspeeding and "revenge revenge killing" it. IMO, expect Terrakion to be around 15 ish in usage by the end of the month. Expect to see a lot more Landoruses as well. Sand Offense, while nerfed, is by no means dead. Landorus and Terrakion are more than enough to ensure this playstyle is still viable. These two are also a lot less predictable than Excadrill as well, so players can use it to their advantage.
Honestly, I have no clue why the hell Volcorona usage hasn't spiked yet. The thing doesn't even need sun to absolutely dominate. TBH, the only environment it doesn't like is sand. Volcorona beats like every hail team by itself. I guess the only explanation is that the best rapid spinner in the game is now gone and Volcorona needs a new dance partner. However, even without rapid spin support, every set is still viable except offensive QD Volcorona. Dragonite usage is already high enough, don't expect it to rise that much.