Once all the hype dies down I think people will find Excadrill to be a very good Pokemon, but not to the point where it needs a quickban. A suspect, I can get behind, though. It's incredibly fast + strong but susceptible to priorty and revenged relatively easily outside of sand. Speaking of which, GIGALITH IS BAD PEOPLE PLEASE STOP USING IT. Not to mention there's a bunch of Pokemon like BUzzwole, Gliscor and Tangrowth that can switch into it.
Another mon ppl have been hyping up is Porygon-Z. TBH I think its pretty decent at best. Its frail so it has a hard time setting up conversion, especially in an HO-filled meta such as this, and even then its not especially fast or especially strong, unless you get a correct download boost. Mons like Clefable (Which I think is really good btw, top 3 mon easily), Tyranitar, etc. can eat a hit and it can also be revenged by fast stuff like ursaring, Excadrill, etcetera.
It seems people have caught on that Gumshoos, despite all the talk on it, is actually pretty terrible thanks to its sub-par stats, so im glad people aren't using that thing on the ladder. I've had some good success w/ a stall team that hit #1 recently, and even on that team it isn't much of an issue thanks to Dugtrio just being able to eliminate it instantly.