Yanmega has had a pretty disappointing trajectory for sure. I was excited at the prospect of Boots Yanmega, but I can't blame anyone using Throat Spray or Specs because it just doesn't hit hard enough without those items, even with tera and Tinted Lens. The most interesting thing you can really do with it is Psychic Noise. The biggest hindrance against it its awful movepool. Tinted Lens is cool and all, but base 116 special attack just isn't enough to make neutral hits work consistently, and its only coverage options are Ancient Power, which is only 60 BP and 5 PP (which is weaker than a stab Bug Buzz even against 2x rock weak targets), Psychic, which has one of the worst offensive types, only being super effective against poison and fighting, Shadow Ball, which is only super effective against ghost and psychic types, Giga Drain, which has several resists and is only base 75 power, and Tera Blast, which forces you to use one of your most valuable resources. The loss of Hidden Power really screws up Yanmega more than most special attackers.
The problem is not power, its counterplay. Once Yanmega gets a free switch via switching in after a KO or god forbid a U-turn, you are forced to hard commit to taking out the Yanmega, else it boost its speed to the point of no return. Admittingly, it is not the best into offensive teams because they can afford to eat a big hit or even sack one of their defensive pieces to it, then bring out something to revenge kill it, while stall has blissey which stuffs it.
Chien-Pao is banned, thankfully. As for other Ubers mons like Volcarona, Urshi Rapid, Arch, and Gouge, I do think that they should be banned as well. However, I heavily disagree with the argument that they defeat the point of pokebilities. Pokebilities is such an interesting metagame because instead of completely overhauling OU, it takes the strong basis of the meta and applies its own changes that give it an identity that is unique without being entirely unfamiliar. The metagame is far from perfect, hell, I mentioned earlier that I believe all mons banned from base OU should also be banned from pokebilities as well, but I also believe that other pokemon such as Clefable, Kingambit, and debatably even Ursaring and Kingdra should be banned. There's still work to do for sure, but metagames with minimal playerbase outside of OMotM rarely are able to get updated, unfortunately
Base 116 special attack with Specs or Throat Spray and Terastalization is enough to outright OHKO or 2HKO many Pokemon and nearly 2HKO any specially defensive wall that isn't Blissey.
There’s a move that I noticed it has that just makes it even harder to stop, that being Psychic noise
This thing has loong been ultra finnicky, idk if the devs are willing to put the ton of effort into diagnosing whatever strange conflict condition messes up geezing's ability activation and deactivation effects lol. (also those aren't replays and are no longer viewable)
There isn't a "restriction"/soft ability ban option, we'd just have to ban the mon outright; none of the veil/cloak mons have been busted enough on their own to warrant this yet
As far as I’m aware there’s no option to restrict or soft ban the evasion abilities, so they would have to just ban all the mons outright
