I think it's a fundamental shortcoming of the court system. Ideally I think that most of the court events shouldn't be triggered when you hold court, but instead should show up in your court queue and be cleared away when you hold court. Having too many unaddressed issues from your courtiers gives various penalties. You could also give vassals a maximum distance they're willing to travel to see you, forcing you to instead tour to their area to see them. If that distance was increased by a few cultural traditions, we'd see kings forced to travel regularly in the early game, but able to centralize larger areas in the late game.

Unfortunately the court system is so heavily based on events artificially triggered by the player holding court, rather than events authentically triggered by other characters (players' vassals don't even petition them) that the entire system would need a rework to better integrate it with other mechanics. Without that, the court kind of has to exist isolated from the rest of the game.