For the price of the X2 + Viewfinder, you could pick up a Fuji XPro-1 kit that to my mind (AF aside - but X1 had poor AF) is a much better camera in all senses and offers interchangeable lenses.
I think Leica is still riding too much on its laurels from the analogue systems and believing they can produce what they want at a price they want rather than listen to users and produce value for moiney that could sell well............Hmmmm, shame!