OK so I peaked #2 on ladder and I've collected a decent amount of experience to talk about what I think should be banned and what shouldn't
Endeavour: The obvious one, there's not much you can do when something clicks this, and with such a wide pool of those mons it's not impossible to just run into something that just teched on Endeavour when you couldn't have thought to play around it
Archaludon: See OU, literally nothing changes really
No Retreat, Fillet Away: People want these banned but I've legit never seen them work once. Just mentioned because other people have. Both of these mons suck, just use a move before them and they're back to being PU mons
Iron Bundle: Again, see what happened when this was in OU, this thing was apparently unbanned by mistake anyway soooo
Ogerpon-Hearthflame: yeah.
NP and SD: The former I want banned, the pool of mons that can pass it is much wider and the receivers are just better, while SD seems perfectly fine, with less powerful receivers and the only good passer being Lando.
Magma Storm: I'd put this on the watchlist for a restrict. Magma Storm passing can be devastating.... but it feels almost random when it actually works or not. Nonetheless, the options you have in dealing with a tran about to activate it are pretty slim aside from risking using your own self-targeting move when Heatran itself is very powerful and could very easily burn you with lava plume, get rocks up, or outright kill you.