The general rule of keybindings added by Sanemacs is that they may not override default Emacs keybindings. There are four keybindings you should be aware of. Two of which are created by Sanemacs, the other two are from undo-tree. While undo-tree did "override" a default binding, it is appropriate since it is a drop-in replacement that really makes a big difference in the usability of Emacs.

"Layers?" (Sane, minimal layers)

If this package gets traction, a project I would like to create is sanemacs-layers . It would be similar how Spacemacs' layers concept but will have different goals.

First, sanemacs-layers would work on any Emacs configuration, sanemacs or not.

Next, it would have a focus on sane configurations that just work, but are flexible. This would entail automatic detection settings to work for your system - configuring your PythonPath automatically as an example.