Seasonal ranking.

Yeah, a game is a game.

Each game is different; in a season, you can try different tactics, play for less "favorite Castles," study new patterns, etc. Also, in a season, the concentration and motivation to win are noticeably less than in Tournaments. Comparing a game in a season to a game in a Tournament is, in my opinion, incorrect. It's like awarding points in the overall standings for qualifying races in Formula 1. A more illustrative and closer example is football, where matches in the World Cup, European Championship, and similar tournaments "weigh" many times more than friendly matches when compiling the FIFA ranking.

Added 3 minutes later

This is a bad approach. Because today you will remove the season from the permanent ranking, and tomorrow there will be a dispute that some Tournaments are not worthy of being in the permanent ranking, etc.

There is no need to remove the season from the ranking; just reduce the coefficient of points awarded compared to tournament matches. The criterion for a worthy/unworthy tournament should be based on whether it is an official or unofficial tournament.