Player rating for tournaments across all installments of Heroes.

But if the cooperative mode doesn't become a leader, then they won't harm me with their days. However, according to your system, they will continue to push me down in the ranking. What's wrong with that? It's clear which system is more stable and better protected. Mine is less flawed. And again, because it doesn't care about the ranking.

Now I think you completely missed the point of the oscillator... If the "cooperative mode" doesn't become a leader, i.e., falls behind your result, then the oscillator will add points to you, not subtract them. Which is quite fair, because it's a reward for outperforming everyone else... This is more appealing than just a dependence on days