>>53225213It's an iterative process: you assess whether something is too powerful/forcing within the tier as it is now, and if it is you ban it. Then, when the tier has had some time to settle, you reassess with the new tier.
I'm not sure where you think this process should stop. The majority opinion on Smogon is that it should stop when things are relatively balanced amongst each other, that is when everything has some reasonable counterplay and nothing is standout as the most forcing strategy. There's no hard numerical limit on how many bans it should take to reach that end.
>largely that balanced each other off by designI don't agree at all, plenty of these are just hard-hitters that can't meaningfully interact without getting a free switch. Flutter Mane, Chi-Yu, Iron Bundle, Chien-Pao, none of these things have any real switch-ins present on that list.
Let's say for the sake of argument that we did have some, like let's say Chi-Yu was a good Chien-Pao counter. It still doesn't really matter, because Chi-Yu itself was really oppressive and linear and people rightfully wanted it gone on its own merits. Since this is an iterative process, eventually you're going to have to evaluate Chien-Pao in a Chi-Yu-less meta.
>>53225265I also just don't understand these examples you give.
>252 SpA Beads of Ruin Chi-Yu Dark Pulse vs. 0 HP / 4 SpD Iron Bundle: 270-318 (106.7 - 125.6%) -- guaranteed OHKOIron Bundle is never switching in, and that's Scarf Chi-Yu so actually it's not even winning the 1v1 in this case either.
In any case anon, I think you might be looking for something like Ubers. It has a similar philosophy, bans are reserved for things that are gamebreaking or fundamentally uncompetitive, and all the other very-powerful things you're expected to just deal with.