I think creating banner images is hard. At least for me. I was lucky, that the last one got selected.
We had a clear “change log”, which pointed out, what’s new. Some of the changes where visual.
So making some screenshots was easy to get it started. I did create a similar collage many years ago using Gimp. I could remember some steps of the workflow and the others I had to look up in the internet.
With the current release, the only visual improvements are very minor. We removed some bugs in the current palettes, which still have a lot of room for improvements.
Then there is the “transition” from v5.3.7 to v5.4.0 – So v5.3.7 is probably an “end point”. – But How do you “visualise” the end of a journey. I did like @Christian_Byron idea with a sun-set or sun-rise.
So I thought about several journeys I made, where I saw both beautiful sun-rises and sun-sets.
a) We had an apartment in south France, with a gorgeous view to the sea. There was a street that meandered along the coast line from the left to the right until it could not be seen anymore. That was the first image in my head, where it probably is more beautiful than it was in reality 
b) I made a trip with some friends on a sailing boat, in Greece, visiting the Ionian islands. A lot of sun-sets, sun-rises. The finest food and something to drink. And finally the most relaxing and beautiful way to travel, sailing with the wind. (and motor, if there is no wind
– or the rest of the crew puking, if there is too much wind 
With these two memories in mind I started to create a fictional scene as a prompt for the LLM.
That’s the initial prompt
You are a photo artist.
I need a photo-realistic image with 560 x 315 pixel
It should be png format
Your position is in a Mediterranean setting.
You are on a rocky coast-line
In the left side of the image is a small village
5-10 houses with flat roofs
they are painted white
windows and doors are painted some blue and some orange
to the left of the village is an olive hain
there is a main street coming out of the village which leads along the whole cost line
the coast line goes from the middle left of image, down to the center and up again in the far distant right.
The rest of the image is sea
The sea is calm only small braking waves are visible
They come from the top left and go towards the coast line
There is a sunset in the distance top right of the image
Very far from the left, there comes a container ship driving towards the sun
the container ship is far away so it is small but visible
In the center there is a sailing boat docked at a small footbridge
The sailing boat is the main focus point of the image
The sails are halve retracted, but still visible
The initial image was this:

Not exactly what I had in mind, but looked good and contained all the elements that I did describe. It could be a photo I made somewhere in Greece.
But then “the journey began”. – I think I made a mistake. I did add the following text, instead of refining the full prompt.
That's nice already, but the sailing boat should be a little bit more in the deeper water.
The street should go with a small bridge from the left side of the image to the right side and out of the image.
the boat should be docked on small dock, a bit closer to the vilage.
The ship should have full sails, but it should already be docked.

Most of the new text was ignored, but I did like the small dock on the right side.
As you can see, some of the houses disappeared. The boat was a bit bigger, which was not intended.
An other refinement
no. the sailing boat should have full sails all of them.
It should be docked an a small dock that leads from the street near the vilage into the see.
At the bottom of the image there should be an ancient bridge from the left side of the rocks to the right side of the rocks.
the bridge should be a bit more at the bottom at the image, but ist should still be visible.
The ship should be a bit more in the center of the image, but it should still be the main focus point.
the dock goes from the street near the vilage into the see.
the ship is docked at the small dock
Result:

I did like the new bridge in the front. But the image becomes way too noisy and more houses are gone
– Full sails - docked - What a stupid idea. More houses gone. No orange elements anymore.
I wanted to start a new → but the LLM did not forget the earlier context. 3 more images and “corrections” and it got worse. I managed to completely mess up the bridge in the front, which was completely my fault. As you can see in the last image, the bridge comes from outside and leads into the water. But I did like the upper 2/3rds of the image.

Final request:
Take the photo and convert it into a semi realistic oil painting

Not bad. → Starting Gimp → Cut the bridge → Add the version number → Submit.
Why the long post?
I did read this thread and thought more background is needed. Now with the background, there are some questions which I want to ask:
Q - to myself: Could I have created the “end result” on my own?
A: No. I can not paint with oil and I do not know Gimp enough, that I could create that scene with Gimp alone. I could have used some of my own “real” images, but manipulating them in a way to get this result, would have been impossible for me.
Q: Is the “process” that lead to the image a “creative process”?
Q: Is the result worth to be accepted as a contribution as a banner image?
Q: Does it “visualise” a start or end of a journey?
I have to say, it was fun, to create it and I do like the scene. For me it’s beautiful and that’s why I did share it.
Have fun!
Mario