You can use HTML & CSS in your custom project template description to add cool preview or decorations to your package.. *Note: Can also cause privacy issues, if user adds external image url, they can capture your IP address that way (and maybe even more? ** Unity Bug Bounty replied that this is not a valid security issue, so will see what happens..). But at least you can make your own packages more fun with videos, animated texts or flashing lights to make it Juicy!
Sample json file: https://gist.github.com/unitycoder/cc...
Info: https://unitycoder.com/blog/2024/03/0...