Proposal: Remove the notification "Player X has plundered a trade route player Y established with you."
Rationale: It's unnecessary and there are too many notifications in the game. The fact that a foreign trade route with the player has been plundered isn't in any way important, the yields are very low. If the player wants to go for CV and wants to have a trade connection with some other player, they will check if a route exists anyway the next time they have to decide where to send a trade unit to.
There are two notification with the city connection icon in red: The notification that one of the player's trade routes has been plundered, and the notification that a foreign trade route with the player has been plundered. Only the former one is important, and it can immediately be recognized by its icon if the latter one is removed.
Rationale: It's unnecessary and there are too many notifications in the game. The fact that a foreign trade route with the player has been plundered isn't in any way important, the yields are very low. If the player wants to go for CV and wants to have a trade connection with some other player, they will check if a route exists anyway the next time they have to decide where to send a trade unit to.
There are two notification with the city connection icon in red: The notification that one of the player's trade routes has been plundered, and the notification that a foreign trade route with the player has been plundered. Only the former one is important, and it can immediately be recognized by its icon if the latter one is removed.