methinks, the properties of the X100 that make this camera so attractive can finally be related to the basic design of a _fixed lens_ camera.
attractive as an interchangeable lens body might be, its construction by far goes beyond what is possible while concentrating on a single lens design. as a consequence, i hope that fuji does not go the way of developing a body with interchaangeable lens mount. instead, i hope that they'll expand the line of the X100 by similar fixed lens bodies featuring other primes, like a 74degree lens and a 46degree lens (equivalent to 28mm and 50mm focal lenght on 135 format).
other bodies, like a 90degree (eqiv. 21mm) or 30degree (equiv. 85mm) may also be interesting, but probably meet too little demand to initiate production.
just my few cents.
s.