Totally agreed. Magit's interface feels like the "curated" approach -- they laid out all the options precisely to optimize your use of the tool. This is great

Totally agreed. Magit's interface feels like the "curated" approach -- they laid out all the options precisely to optimize your use of the tool. This is great to have in small, task-dedicated parts of Emacs. But then we also get complete, "uncurated" discoverability such as in your C-c example. I think that Spacemacs is a decent compromise between the two, covering a large swath of functions with a loosely organized menu structure. Although they occasionally clobber some key bindings in an annoying way (org-mode and magit come to mind), it's nice to be able to find "text" things under the text menu, even when you don't remember the key-binding at all. It's surprising how well the three modalities (curated magit, general which-key, and semi-curated Spacemacs) work together, and stay out of each other's way (for the most part!).