This is the important part. Sure, go ahead and add whatever decorations to the characters you want. 99%+ of us will have no idea what they mean and treat them l

This is the important part. Sure, go ahead and add whatever decorations to the characters you want. 99%+ of us will have no idea what they mean and treat them like they don't exist. Pronouncing those isn't taught to the vast majority because they are not even remotely commonly used. What use is any extra indication when nobody knows what it means?