Flexible Composition Workflow in Firefly Productions

What I would love to see within Firefly Productions:

• I’d like to provide a few ready-made example compositions in various sizes (e.g., square, skyscraper, panorama) for the same design.
• Additionally, I’d like to upload some iconic individual elements that make up the design.
• I’d like to select the desired output sizes.
  → Either the most suitable example composition is cropped/rescaled,
  → or the separate elements are used to create a new composition.

(Also, I’d like to be able to use partner models within Firefly Productions, so I can explain what I want to achieve to, for example, NanoBanana.)

Thanks!