Something to keep in mind with the potential of 10 Bans in Champ Select

So in a recent post it was stated that 10 bans in champ select is being "Potentially Considered" for next season, but I immediately thought of a problem that could arise with this, the exclusive banning out of a certain class (Marksman, Support, etc.). So I thought of a possible solution (just something to think about, hear me out on this one).

So what if there was a Class Limitation on bans, so as to avoid 10 ADC's being banned or 10 supports being banned. The way this would work is that maybe after 6 Marksmen are banned during the ban phase, you would have to ban some Assassins or fighters or some other class. I figure that 6 is a good number, I'm mostly worried about ADC's or Supports being collectively banned out with this change but this seemed like a good solution (The other roles have a decent variety of champs to choose from). I really like the idea of more bans and I feel it's long overdue with how many champs we have now and how Riot likes the idea of "Diversity in games".

I know that the prospect of 10 ADC's being banned out isn't likely to happen but I like the idea of preventing the chance of it happening in a game before it becomes a problem for someone. I am by no means an expert on this so feel free to let me hear your thoughts on how this system could be improved.