Nice work! I think I like the second and fourth best, I tend to like either b&w or colour. That lens module... its APS-C? I was contemplating sacrificing the GRD3 for a GXR with the 24-72 modiule which is a 1/1.7 IIRC
I am sure too many. One can never have too many but one is certainly more than enough to make art.
No I do not think I will be buying the M module, in all honesty if I am going to manually focus I might as pull out a film camera. Digital cameras, especially P&S have become synonymous with some form of auto-focus for me.