Player rating for tournaments across all installments of Heroes.

Actually, I suggested implementing an additional coefficient for tournaments: King's Bounty - 1.2, War of the Vikings - 1.4. This would increase their prestige and allow players to earn a higher rating in them.

The coefficients should have meaning and reflect the strength of the tournament. For King's Bounty, 1.2 is too low for a tournament with three players, but too high for a tournament with four. And if War of the Vikings turns out to be only 1.4 times stronger than an ordinary tournament that barely met the quota, then it can be safely considered unsuccessful and not worthy of its name.
In the system I proposed, the multiplier would naturally follow from the composition of the participants, rather than being arbitrarily assigned. And the differences between tournaments could be much more significant.