Monster jsonification is the next big step and is actually included as part of Galen’s mod manager PR, meaning that once that lands monster jsons should be pretty much complete. Martial arts have/are being moved to the json files, allowing for customization there (though we are still working out some bugs on that front), and from where it is now it should only be a small step to move healing item iuses out to the json files, meaning you can make your own customized healing items.