For anyone interested in a cross-platform single-binary alternative to Pi-hole, I've been hacking on this: https://github.com/seedifferently/nogo
(Disclaimer: I am the author of nogo)
(Disclaimer: I am the author of nogo)
2. Prevent sites from manipulating the list via CSRF.
3. Packages/Installers with installation as a service/daemon would be a plus.