Finally have a decent keymap. It's a global minor mode based on mini-menus : use modern keys (like control-r to replace), but have prompts to offer you many options (eg., join lines, rot13, ...)
Alt keys are reserved for the power user : it offers a-la-vim paddle (ijkl), plus direct shortcuts eg to replace-regexp without seeing "replace menu" ("prompt").
Control-c is used to copy current row / selection, thus control SPC is used for activating mode-specific-keymap.
This is currently on top of : cua-selection-mode, undo-tree, & i'll add stuff like ace-jump
Thanks to emacs-wiki, +ErgoEmacs
, +Matthew Fidler
and evil-mode for everything I learnt =)https://github.com/pyluyten/emacs-nu/