@Gaipacub You *can* make the image plugin to generate images of these built-in sizes (in this case, the landscape) in a banner-sized image by setting the width and height options, however the result will be stretched out. Also, implementing that function in an image generator that uses the T2I framework will require modifying the framework directly so that the generator will output images in that size.

Here’s my remix of the plugin example that does that job: https://perchance.org/yydmr1f4kn#edit