Yes, the arrangements of self-seeding plants can look great, and the wildflowers are often more interesting and intricate than the cultivated ones. :) Dandelions are beautiful and edible, but yes, they tend to suppress everything else on the lawn.
I know about the Succulent growers, and almost published this there, but then I had some doubts because these plants grow wild, nobody grows them ... and not all are succulents ... but yes, it's a typical succulent's habitat, it could fit that community ... next time I visit a similar place, the post will appear there.
RE: LITTLE GARDEN ON THE ROCK