My kids have always enjoyed receiving their letters this year my son is 7. He realises each year the letters are the same but the friend, the achievement and gift is the changes. I think you should offer more variety of changes. Especially as he grows older. Different subjects of letter could be available for example. ‘I know you have questioned if I am real…. Or this year you’re moving to your second school…. Or starting school or just some different editable boxes. I think you should also be able to see previous chosen letters to avoid choosing the same. I would love these changes so I can keep the magic alive for more years please. Thank you