Player rating for tournaments across all installments of Heroes.

Otherwise, it'll turn out that the dinosaurs gather together, calculate the average rating, rub their hands, and set a coefficient for themselves that is simply off the charts!
Announcement: "For the purpose of holding the P. Lumumba tournament, a group of players invites all those wishing to participate with a rating of at least 950. Those below are asked not to trouble themselves."

Who would even let them do that? There are administrative and forceful methods to shut them down :) with the help of a coordinator. But even in that case, someone will still take last place there. Or are you afraid that even in last place, a player will more than cover the 10% aging penalty? And receive a bonus greater than if they had entered a weak tournament and taken first place there? Yes or no? I'm starting to lose track of these high-level concepts :)