Okay, I really want to make sure the community knows where I'm at right now in regards to the next ban wave because I don't think I'm on the same page. I'm not speaking for anyone else on the council, these are just my personal thoughts and what I think of two Steel-types. Regarding Mega Metagross and Kartana, I've noticed a lot of discussion of these Pokemon both in this thread and in the Monotype chatroom, so I think this is something I have to address. Take note of this: I'm only referring to the
current metagame. Whether or not a Pokemon is banworthy in the third ban wave is irrelevant to me for the current metagame.
Mega Metagross: Now this is a Pokemon that is apparently "very obviously being banned" and this viewpoint has been repeated by many people. I don't see it at all. What exactly is making Mega Metagross so broken that it needs to be banned? In fact, I remember receiving a lot of criticism for not having banned Mega Metagross in the first ban wave, which included titans like Complete Zygarde, Pheromosa, and Aegislash. People were literally saying that Mega Metagross is a threat on the level of those three, and that just is not something I understand. As it stands, I don't believe Mega Metagross is even worth banning in the second ban wave.
On Psychic teams, why would you ever use this Pokemon? After more testing since my original post, I am even more convinced that Mega Alakazam is not just a good Mega Evolution, but I even believe that it's a superior Pokemon to Mega Metagross. Mega Alakazam's ridiculous Speed tier makes it far more useful against offensive teams, and its Trace lets it check weather and terrain sweepers, and two of the top five types (in my opinion: Dark, Ground, Electric, Fairy, Psychic) use them. Mega Metagross on the other hand... beats Fairy and does just about nothing else. It doesn't help that Jirachi is a very common and useful supportive option that also beats Fairy teams, so I would pretty much never even use Mega Metagross on Psychic teams. Mega Metagross provides just about nothing of worth to the team.
On Steel teams, I still don't know what this is supposed to be used for. It still gets walled by half of Psychic, it still gets destroyed by Zygarde-10% from Dark(even more of a problem when most of Steel is very weak to it), it's still horribly weak to Darkrai on Dark, and it takes a ridiculous amount of damage from Alolan Raichu. I'd sooner use the walled-by-Tapu Lele Mega Scizor, which at least provides momentum and a check to many of the top threats of the tier. It also just gets OHKOed by Kingdra and walled by the defensive Water core. What help does it bring to your team? No idea. I can't think of any, at any rate. Being able to beat Fairy is hardly an impressive resume when your entire team is Steel-type too.
As the host of the Welcome to Sun and Moon tour, I've watched every battle. I have not seen even
one instance of Mega Metagross being valuable. It only contributed to one battle because it got critical hits with Meteor Mash. Outside of that, it was completely useless and deadweight in every single battle. So far, in the total of 41 battles played, Mega Metagross was useful in only one game because of luck. And this is the Pokemon that the council was supposed to ban alongside Complete Zygarde? I hope my utter confusion is understandable. It's not that I haven't battled good players with it, it's that it's just not useful and it's just not broken. I've battled on the ladder and none of my teams have any trouble with Mega Metagross. It underperforms in tournament play, and it underperforms in ladder play.
I'm not speaking for any of the other members of the council, but I think my personal position on Mega Metagross is clear. Is it worth banning? I don't think so right now, but feel free to change my view.