I found this feature for ido: ido-describe-prefix-bindings.el.
Here is what it gives with ido-grid-mode.el (which may worth having a look by the way) after pressing C-x C-h:

This does not work with ido (not be comptible with emacs 24.5 or 25.1.50?), but I think this feature would be great for ivy.
Maybe this could also fit to hydra: complete next possible commands (those bound to keys in the hydra) with a completion system such as ivy.
Another possibility for hydra would be creating a hydra after any key (C-x) with C-h, with next possible commands as either commands to execute (C-x, C-u...) or hydras to call (r, n...).
r, n...).
Maybe I can talk about it to the author of which-key as well.
Again, I'm sharing my thoughts, and not making a request.
I found this feature for ido: ido-describe-prefix-bindings.el.
Here is what it gives with ido-grid-mode.el (which may worth having a look by the way) after pressing C-x C-h:
This does not work with ido (not be comptible with emacs 24.5 or 25.1.50?), but I think this feature would be great for ivy.
Maybe this could also fit to hydra: complete next possible commands (those bound to keys in the hydra) with a completion system such as ivy.
Another possibility for hydra would be creating a hydra after any key (C-x) with C-h, with next possible commands as either commands to execute (C-x, C-u...) or hydras to call (r, n...).
r, n...).
Maybe I can talk about it to the author of which-key as well.
Again, I'm sharing my thoughts, and not making a request.