There is small issue i am facing, I want that default billing and shipping address should show on address select option on checkout where if no new address has been created yet
I am looking to be able to filter the $post_data array and add in some custom address data while bypassing the sanitisation / validation functions you have.
If you could add a filter hook to the code then that would be great and allow for other devs to hook in and extend the scope / use of the stored address data. I imagine something like the below would not affect any of the existing code.