Danny Rosen had built a zsh autocomplete for CF tool, and is looking to see if anyone in the community wants to take over maintaining it... https://github.com/Dannyzen/cf-zsh-autocomplete-plugin

If you want to take it on, or if a couple of people want to share the responsibility, shout out. I can help move it into the cloudfoundry-community GH org if the volunteer(s) want, or you can do with it as you want. :)