Thank you for writing this up!
I agree on all points, particularly when it comes to image quality. Recent advancements in Stable Diffusion and particularly Midjourney, showed us what is possible with a good diffusion model, and what we get from DALL-E API could be better. I’m sure OpenAI is working hard on solving that.

One thing that I would love to provide is to make it easier to create featured images with 2:1 or 3:2 aspect ratios. When I write blog posts, I struggle to find a good feature image and often end up reusing the same ones from Openverse or Pexels.