Gonna offer a bit of a more positive take in light of all the negativity surrounding the current meta :]
I currently enjoy the meta and I feel very alone here lol :'] There is still alotta room for creativity in the builder and executing in game still feels very proactive, despite the meta's extremism rn, which is the main tiering issue at the moment. I'm gonna continue this post by pointing the finger at Archaludon and why I think it's the perfect solution to ban to fix said extremism and why I think nothing else is really outright busted/unhealthy atm.
First of all, what I mean by "extremism" is that the meta currently revolves around HO, Rain HO, Sun HO, and Stall as evidenced by usage stats in both ladder and SPL. This is clearly a problem since everything within the spectrum of semi-stall to BO is getting squeezed into losing usage, thereby reducing some of the aforementioned creativity in the builder I mentioned before. However, to not contradict myself, I will admit that the middle spectrum of playstyles do have some tricks within their sleeves to handle the meta staples through some under utilized defensive options, such as G-weezing, Deo-d, and hippo. These are niche, and there are more of them, but I believe banning Archaludon will help open up more of these options thereby solving a lot of issues within the current meta.
Now on to Archaludon, I think nerfing rain through tiering action is the best route to go. Rain itself is no issue as without Archaludon its just the same as Pre-DLC2 and suffers a lot of the same issues against fatter balance/stall as well as BO's with a solid enough pivoting structure to mitigate the momentum generated by Barra+Treads+Peli. This goes out the window with Archaludon completely though, as now rain has a breaker with like what? 3 counters? Ting-lu with wish support, spdef hippo, and tera ghost CM Blissey are like the only 3 true counters I can think of off the top of my head and both lu and hippo still take a hefty chunk from stamina boosted press and draco respectively. This is making rain far too oppresive as it now went from being a matchup influenced HO response to something far more consistent. Sun, Stall, and regular HO do not have these qualities as Sun does not really have many strong Chlorophyll users to speed control or photosynthesis users that want the speed boost over attack unlike rain with swift swimmers. HO relies on Booster/sticky web/Prio to speed control and stall of course lacks the raw breaking power to threaten teams immediately like it always has. Bottom line all these playstyle have clear weaknesses while rain does not and Archaludon is the culprit here. Without Archaludon I can't see rain being as consistent as it is rn and "should" fall in line more with rain of pre-Indigo Disk due to the significantly reduced breaking potential.
Despite this, I still really enjoy the meta as it is :] Idk if it's just because I came back to playing again consistently since gen 6, but I'm happy rn. Tera is the best generational gimmick since megas imo and I don't really see any of the aforementioned mons like bolt/fire/deo-s/kyurem as an issue. I can understand Roaring Moon a bit and is definitely suspect worthy after Archaludon though we will cross that bridge(pun totally intended) when it comes.
I think Arch suspect -> survey -> Moon suspect is probably the way to go at the moment, though these are just the opinions of a washed up gen 6 player :]
Have a nice day playing mons and posting everybody :]