Action timer in combat.

First, let me say something about you. You're an excellent player! One of the fastest, too. But most of your failures, mistakes, and losses stem from your haste!
The final battle is what we strive for when playing this game. It's the highlight of the entire game, so to speak. Beautiful final battles are already rare, and thanks to everyone's clumsiness, there are a huge number of mistakes and frustrating defeats. There's no need to introduce anything; let people think calmly during the final battles. That's why intellectuals play, because they calculate several rounds ahead in these battles. We've already shortened the timer as much as possible; be respectful of yourself and your opponent, and don't ruin the most beautiful part of our game.

The ideas are good, but on the other hand, full-fledged final battles are extremely rare, so there's no need to worry about it.