Then, separate tournaments should be held for each "League."
Or, for example, a year-round tournament could be held, with players moving to one or another "League" at the end of the season/year.
If players are interested, let's create a thread and discuss it...

That's exactly what I mean: ask who wants to play in the highest league and let them play, and those who are more interested in playing with players of similar skill levels can play in the first league. And there's no need to say that playing with top players will improve your level. Why? When you watch a stream of such a player, you can learn something, but when they come to you in the second or third week and kill you, what will you learn? It's a pity that top players don't really like to stream.