Without any clear sense of scale, it tends to lose its effect; that's why once the size reaches a certain point, comparing it with the main body is meaningless, you need to compare it to something of a similar size. That's why this particular method of growth is this effective: it creates opportunities for constant comparisons.
And it's really rather difficult to find anything larger than the literal universe.
As for the images, I don't own any, and I don't have the money to commission them. I know some artists who are probably capable of drawing it, but 59 or even just 10 images in a sequence may be a bit much. If I had the images, I'd use them, but I don't, and I'm not an artist.
However, I'm working on adding some news stories to give more context to the various stages, build the world around the events taking place, and hopefully improve the experience. Quantity is easy to make, but gives diminishing returns, while quality takes a lot more effort but gives a lot more back.