What kernel are you using under Debian? charge_now is available for me with 3.16-rc1 and 3.17 kernels and I've just noticed the the battery level widget is actually working in E17.
This should just be a matter of enabling CONFIG_RFKILL in the kernel config file. If you try it and it works, report here and I'll enable it in build_kernel.sh.
CONFIG_RFKILL=1 CONFIG_RFKILL_REGULATOR=m
nice $NICENESS make -j $JOBS rx51_defconfig
I got the brightness working in E17 as a regular user: Code: # chmod +s /usr/lib/enlightenment/utils/enlightenment_backlight
# chmod +s /usr/lib/enlightenment/utils/enlightenment_backlight