This sounds amazing. Just today I wondered what it would be like if our characters could correspond with others. For example, if I (King of Scotland) marry off my daughter to the Grand Prince of Kiev, it would be nice to receive a letter from her saying that she arrived safely, that she was well-received by the Grand Prince, that she is getting to know her new homeland, or something to that effect. A few years later, you could receive a somber letter from your son-in-law informing you that she died in childbirth. That sort of inter-familial correspondence would really help immersion/roleplay and it's really better than just receiving that little message in upper right corner saying your child is dead.
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