Whats the reasoning for the council avoiding complex bans? It seems to me that if the issue is a specific aspect of a mon and not the entirety of the mon itself then that aspect should be banned rather than the mon itself. This seems especially true for Cinderace because Court Change provides an entirely unique niche that will be lost if the mon itself is banned rather than just Liberio on it.
If we ban Libero, then that means that Pokemon such as Raboot are no longer usable in lower tiers, so that already is an unfair solution as it departs from the status quo and has noteworthy collateral. However, let's say there would be no collateral and it was a different case of banning an ability. If we ban an ability because it only breaks one Pokemon, then the logic is to preserve the Pokemon in the tier. If an ability is broken on numerous Pokemon, then perhaps it is worth looking into. So now we're looking at issues that are broken only on one Pokemon -- if only Cinderace got Libero, then we will still look at Cinderace, not Libero.
If we start tiering abilities like this, then what stops us from tiering other fragments of Pokemon? All of a sudden, we're banning specific moves and abilities. We're no longer tiering Pokemon and usage is no longer reflective of the metagames as we are tiering Pokemon, abilities, items, moves, etc. -- it creates an awful slippery slope that we refuse to conform in to. If we give in once, then it opens the flood gates and devalues the entire system.
Now let's say we tackle the issue in the most specific way possible: a ban of the combination of Cinderace and Libero. This is called a "complex ban" and it is also something we try to avoid at all costs. If we ban the combination of Cinderace and Libero, then why not try to balance every single Uber Pokemon by banning it + its ability, it + its signature move, it + a specific item or items, etc. -- it creates a similar slippery slope that would derail the entire tiering system.
At some point, it becomes very complicated and defeats the purpose of tiering overall. Needless to say, we want to prevent starting this issue and Cinderace will be tiered as a Pokemon because of this.
Let's conclude discussion on this topic here so others can use this space for their questions and we avoid a formal debate. If you have more questions on other topics, feel free to post here. If not and you have more on this topic, feel free to PM me anytime and we can discuss further!