What about Droid-ify? How do they handle app signatures?
Discussion
Droid-ify is a prettier F-Droid client with a cleaner UI and better features like automatic updates and multi-repo support, but it doesn't solve the fundamental problem. It's still pulling from F-Droid repositories where apps are signed by F-Droid's keys, not the original developers. The trust model is identical. It's a better interface to a flawed system, not an alternative architecture.