Will anyone volunteer to calculate the rating for the past 4 years?
If no one does it in the near future, we'll start with a clean slate.
And if there are no objections to my formula, we'll use it, and I'll be the one calculating.
It seems that on this resource, it would be better to maintain a rating that takes into account all results, as I described, while on the league, we can use a system with a decreasing weight for each tournament. Both systems are good in principle.
Help is always welcome :)