So, we can retire at any time for 10 GB, and are forced to retire when our kings are around 16 years old. Some people (like myself) don’t often check how old our king currently is. I’d enjoy it if we got a notification when our king is around 14 or 15 years old, so that we can start searching for an heir if we don’t already have one.
It would be a one time notification, and could say something like “Your king is getting older and won’t be able to lead his pride much longer! You should start looking for an heir soon!”

If you don’t support this, please explain why!