I don't like repeating myself so read above.
What I see, as far as your reasoning here, is as follows:
- We'd have more discussions that actually makes sense
- It would help people who really wants to get real competitive in the game
- We could also discuss new metas
The bottom two already happen, and you have not provided supportive evidence for the top one. This is why I asked for clarification.
I estimate 90% of the total population of league are gold and below
From what data are you pulling this estimate?
probably 70% of that is toxic
Same question as above.
on the remaining 10% of the population there's probably just a few toxic players left
Same question as above.
there would be less complaining about their ranks
If I have a club where I only allow the top 10% of wealthiest people in the world to join, of course there will be less people complaining about their money. This is basically the same thing, and I don't see how that would be useful in having a better experience.