Is the 35mm equivalent wider than you are accustomed? You seem pretty far removed from your subject. I like the compositions, but I feel like you could get in on your subjects more. I'm no expert, but that's my initial response.
Nice set of images here and most have a nice 3D feel to them.
I love my X100 but use it mainly for landscape work where it excels but I have tried it for street and found it very much like my older Leica M film cameras due to size and ease of use - I have not had any problems with AF since the last firmware update.