a) well… why would you mess with the distro without having a keyboard near?
b) As drivers are part of the kernel, touch input (for on-screen keyboard) should be possible @daniel.fairhaven: same for bluetooth
c) Energy consumpion of the plain base system (kernel, daemons) should already be okay. Also, if Plasma Mobile is choosen, they also seem to really care about this. See my other post:
