I have suggested to use the File Blocks from Dark Basic Pro - Enhancements library on the git hub and The Game Creators marked it as enhancement, so maybe they will be start implement this after the official release of the Application Game Kit.
The File Blocks was one very nice library from the Dark Basic Pro which you were able to load any asset directly from inside a zip file which you can protect it and with password.
Not just the regular zip library the Application Game Kit already have, which extract everything from a huge zip file just to use 1 asset and then delete everything on run time and every time you will need to load 1 asset you extract huge zip files with lots of assets and then you will need to delete all of these extracted files one by one and you will need to write unnecessary files in your hard disks, your game will lag or take very long time to extract 100MB file to use 5KB image and then delete everything again and whole mess will expose your data and make your hard disk fragmented and slow.
Which means both were Basic and converting Basic to Basic will not be a huge problem. I believe the Dark Basic Pro and the Application Game Kit may have some compatibility in their cores. All objects, images,music,etc have a special ID number the same happens with Application Game Kit, so I believe there is lots of Dark Basic Pro code inside the core of Application Game Kit.
I am a BlitzMax user too and I suggested some 3rd Party libraries to load assets from inside zip files and creating and packing assets to zip files on runtime but who will care to port them from C to Application Game Kit?. So the native Dark Basic File Blocks will be translated much easier and this is a Game Creators product and The Game Creators may take care of it instead to port an unknown library from other people. Also if they add the ability to create and add assets to zip on run time this will be the best. (Meaning there will be all kinds of functions to load and create zip files and set passwords and add and remove any assets in both directions in and out of the zip).
Look the post of the GitHub:
https://github.com/TheGameCreators/AGK-Studio/issues/304