Unfortunately, the Foundation universe doesn't seem to be very widely known.
And they're such great books! Not just the Foundation ones, but many by Asimov.
Solaria is such an amazing world, and has such a great society. It's the kind I always wanted to live in. The Solarians strike me like me. They are individuals.
I'm also including the world of Solaria in some of my SM fics. I'm writing a biography for Pluto, and that she was raised in the Solarian way of life, which will conflict like with her feelings for Endymion. I thought to give her some Aspie-like qualities, which will also come out more in future chs.