Woops, accidentally deleted my post.
I'd do my own OS, I'm just not sure what languages they tend to be programmed in. As of yet, I only know how to build a web page, and manipulate my existing system with Ruby.
I have specific aspects I'm wanting: A minimalist design that I can still add custom applications to the menu. I want most my programs to be in a language style that I can read, which means code that looks like English, not gibberish.
I'm also wanting the network option to be exclusively IPFS. Which I'm not sure is an operating system thing.
Now by minimalist, I mean that while the toolbar has a gradient, it also has transparency settings and the ability to resize your menu. And hide your desktop icons.
Oh and GNUPG and other cryptographic tools come preinstalled like in Tails.