It'd be nice to have any easy way to make
the command line more friendly to interactive
users, rather than
Posix compliant.  The only way I can think
to do it is to comment the bash initialization
files.

Add the following comments to
/etc/skel/.bashrc and /root/.bashrc

# Uncomment the following for a more forgiving
# interactive command line environment.
#alias rm='rm -i'
#alias cp='cp -i --strip-trailing-slashes'
#alias mv='mv -i --strip-trailing-slashes'

And the following to /root/.bash_profile and 
/etc/skel/.bash_profile

# Uncomment the following for a more forgiving
# interactive command line environment.
#export LESS='-i'
#export EDITOR='pico' ;# default is vi, or choose mcedit, emacs, or others
#export VISUAL='pico'

Clutter, yes. But at least somebody who's looking will
have a guide to the possiblities.  Many who know enough
to find and read the files won't know all they might do.